Whether or not he is a legitimate Pope in the line of succession I probably won't know in my life time so I have to accept that he is for the time being. As long as he's not asking me to give up my salvation by actually changing the doctrines of the Catholic Church, and placing as a de fide dogma, which is incumbent upon all Christians in order to BE a Christian
We as individuals change dogma perception by our actions in word and deed, by example and profession. Either we represent Christ and God or ourselves and the world.
As Christians We are all one in Christ. It is He that works in us both to will and do His good pleasure. And We will be known by our fruits.
John 17:17 Sanctify them through thy truth: thy word is truth.
John 17:18 As thou hast sent me into the world, even so have I also sent them into the world.
John 17:19 And for their sakes I sanctify myself, that they also might be sanctified through the truth.
John 17:20 Neither pray I for these alone, but for them also which shall believe on me through their word;
John 17:21 That they all may be one; as thou, Father, art in me, and I in thee, that they also may be one in us: that the world may believe that thou hast sent me.
John 17:22 And the glory which thou gavest me I have given them; that they may be one, even as we are one:
John 17:23 I in them, and thou in me, that they may be made perfect in one; and that the world may know that thou hast sent me, and hast loved them, as thou hast loved me.