You can still ftp some PHP files and it will just work - there are plenty of services that offer that.
You don't need to shit your files across buckets and provision 20 IAM profiles - noone's forcing you to do that and that is not how you host a web app.
If you're fond of the ftp-based hosting days, those services are available and they will happily take your money.
And for the record obviously I'm not advocating for going back to the dark ages, ftp / php / shared hosting also had massive issues, my point was that things were _designed_ to be simple and the model in your head was simple and close to the metal.
If you're joining an existing project today, or like OP's problem/solution you just want to self-host something, maybe even just to evaluate it, it has become a headache.
I've never actually seen a "real" containerised app, one that was 100% agnostic and simple to deploy without multiple exceptions for 3rd party services and so on.