I think the question may be based an a misreading of the Psalm in question, Psalm 104:2. It doesn't say God "stretched" the heavens in any Bible that I'm aware of. The verse in the KJV reads; "Who coverest thyself with light as with a garment: who stretchest out the heavens like a curtain:"The KJV says "stretchest". NIV says "stretches". NLV says "stretch". ESV says "stretching". Need I go on. Every translation uses the present and not past tense. The Hebrew term transliterated "nowteh" is a term associated with the stretching of a tent.
They are still expanding according to science. That would not mean that they were not also stretched at creation! Possibly even more. Like the verse right before. He was also clothed with majesty and honour in creation week. We also see that the context is creation in verse 5 Who laid the foundations of the earth, that it should not be removed for ever
In verse 20 it says He makes darkness. Again the light was made and separated to make the day and night in creation week 20 Thou makest darkness, and it is night: wherein all the beasts of the forest do creep forth
So yes, He makes darkness but that does not take away from the day he actually made it.
In Job 9 it talks of God 'making' Arcturus, Orion, and Pleiade. Yet we know they were created a long time ago. So in context, then I think we would say something like 'God makes Arcturus, Orion, and Pleiade yet they were created long ago when they were made' Perhaps there is some star 'birth' going on today and some things that change the constellations somewhat so if we wanted to focus on just the present, we could get some sort of fit as well.
In Isaiah 40:22 (KJV) we read the same analogy; "It is he that sitteth upon the circle of the earth, and the inhabitants thereof are as grasshoppers; that stretcheth out the heavens as a curtain, and spreadeth them out as a tent to dwell in:" These are descriptions of God and His power and vastness.
Again, part of that chapter looks at creation
Isaiah 40:12 Who hath measured the waters in the hollow of his hand, and meted out heaven with the span, and comprehended the dust of the earth in a measure, and weighed the mountains in scales, and the hills in a balance?
The chapter is broader in scope than just the past though as the other chapters we looked at here also are. An example of more than the past being spoken about in that chapter is
Isaiah 40:10 Behold, the Lord God will come with strong hand, and his arm shall rule for him: behold, his reward is with him, and his work before him
The Cambridge Bible for Schools and Colleges says of the Psalm "The canopy of the sky is compared to a tent-curtain, stretched out over the earth. By His simple fiat God spread out these heavens as easily as a man might pitch his tent. Their vastness is a symbol of the majesty of the King Who dwells in His royal pavilion, Whom yet heaven and the heaven of heavens cannot contain.”
Yes and He did that in creation week.
The phrase is a metaphor for the stretching out of a curtain or tent, something the Israelites were very familiar with and here it's applied to the heavens. So, as with in Isaiah, the metaphorical use of the term isn't meant to be taken literally.
It also is describing what God did. Of course we take it literally, but not super literally in that we claim that the universe expansion or the creation of space was actually done with tent fabric!