No, It's not, and I'm not.
Except for the BB....there's no "time" before the BB...therefore there's no "before the BB".
"If" there was anything quote/unquote "before" the BB, it is right now not knowable to or for us right now, which is why it's pointless to discuss, or to try to use as evidence for a thing that has no cause, because, right now, none of us knows, or can know that right now currently, etc.
I understand that may be difficult to wrap your mind around but that's the scientific concensus.
I think you're the one who is having difficulties with their mind. But, "whatever"...
There's no such time as "before the BB".
What you're speculating about doesn't exist. You would need space and time to already exist to have a time before the BB....and the BB created all space and time.
Use any word you want to, or whatever kind of words you think are applicable, because the real truth is that none of them might not entirely applicable right now currently, etc, since we are beings of our space-time, and only what we can know of that only right now currently, etc. And the evidence all says that that (the universe, or anything that is made up of space-time) is all pretty much entirely deterministic right now currently BTW.
Again, how can there be a "before the BB" if time doesn't exist until after the BB?
If any person or scientist is going to be 100% honest, then they must conclude that we don't know if there was quote/unquote is/was anything quote/unquote before/outside of/above/beyond, etc, etc, etc, the BB or not, or quote/unquote beyond our space-time or not, etc.
Again, it's pointless to discuss, let alone to try and use as evidence for an "uncaused cause", etc. Because we just "don't know", etc.
Shortest, simplest explanation.
Quote/unquote "before" is not the only term we can try to use, but none of our current words/terms may be adequate right now, as I have already said, and/or discussed.
Words/terms/defintions confined or invented inside our time and space might not ever be adequate, etc. But there always might could have been/may be "something" rather than "nothing", etc. You can say "before", "beyond", "outside of", "above", and none of these terms may apply, as they only apply to our understanding within our own space-time, and are only often used to describe what is only within our own space-time, etc. And no one who is ever being intellectually honest or otherwise about anything right now can ever definitively say there was for 100% sure "nothing", or can ever definitively for 100% sure say there was "something", as right now it is a just a definitively 100% for sure "unknown" to all of us right now currently.
So talking about what was quote/unquote "before it" is kind of pointless to talk about right now currently, until we have any kind of proof of that, if we ever do ever, etc. Because until then, we don't ever, and may not ever right now currently, etc.
And absolutely no one with half a brain can certainly try to use it as "proof of an non-deterministic universe", etc, as the universe has already been proven to be deterministic by science, etc. It's even how we can even know about a BB, etc.
Please quit talking about facts. You've made assertions, proven nothing.
Science has proven that everything that makes up everything is always deterministic always, and you're going to call that and "assertion" or "assumption"??? Just where is that planet that you come from that tries to change, not what I have proven, or am trying to prove, but what science has already shown/proven for quite some time now, etc? Because I might like to visit it sometime, as long as you promise me I won't be affected/infected by it's madness or insanity, etc.
Back to subject, you cannot get non-deterministic processes from what is/are the building blocks of which are always, always 100% deterministic, and you cannot try and change the fact that science has already proven that by just the words coming out of your mouth that it hasn't, etc.
Well that makes a "cause" for the BB impossible then.
We can still speculate, but we might never know for a long time yet, and maybe might not ever know maybe, etc, and that is the only honest conclusion right now for anyone who is being intellectually honest whenever talking about whatever was quote/unquote "before" the BB.
But, if the universe is ever shown to end in a big crunch, then we would have a plausible explanation for it maybe, etc. But untl then, we don't right now know, and might not ever know, right now currently, etc.
Take Care.