This is true. It is like when Obama said he did not have the power to enact DACA by executive order. Then he does it.
I can agree that there is a lot of general political verbiage that does not carry any legal weight but do not necessarily agree that it is never relevant legally. The courts are or should be properly vigilant for presidents trying to use executive orders and/or emergency powers in matters where they are really saying "yeh, I know congress is sitting over there in session and I know they have the proper jurisdiction here but I don't know if I can get the votes."
Sometimes, if not often, both Biden and Obama make/made comments that are evidence of that.