I guess most won't bother to read the full post and will instead react negatively to the title.
Exactly, it talks about ads in one paragraph of a very long post, and it's mostly to talk about all the problems that an ad revenue model has for FOSS!
Honestly people need to RTFArticle. It's talking about the result of interviews with developers on how they would prefer to be compensated, not definitive plans for what is or is not going to be allowed in F-Droid in the future.
I looked into spray foam insulation but not only were there lots of risks, but it was more expensive than traditional warm roof insulation with PIR boards or similar. I do think people should research what they put in their own homes as it wasn't hard to find information that ruled out spray foam insulation fairly quickly.
Having said that, there is clearly some sort of regulatory gap here as not being able to mortgage your home is a very serious consequence of a relatively small and seemingly innocuous home improvement decision.