No. Sounds fine to me. In Canada we wouldn’t do it that way, but not because it’s wrong or anything. Different strokes for different folks.

As long as it doesn’t end up like this: https://youtu.be/lfyaftYvFGg

Sounds like a can of worms. A soft spot in the floor probably means the subfloor needs to be replaced, and if the floor joist is also rotted, then you’re really up a creek. I say just sell the house and move to an apartment.