Or it's just that the let's encrypt topic and https per Default and getting down ranked on Google when using http makes 80 just a really really bad option.

My company blocks port 80 globally and I only learned about it through an internal service I configures. Which shows how little normal day to day traffic is http and port 80.

Also when the https topic came up, quite a lot of big hosters (shops, crms, website hosting) started to give you https which was NOT normal before.