First, it's still one more month.
Then there are much more free tier options than the ones listed.
E.g; AWS, fly.io, koyeb.com, railway.app and tons more.
There are also free domains (e.g. for .tk) at freenom.com
Blog post author here. You're right that there's a lot of alternatives and that's great! In the post we listed a few options that we have personally tried and can recommend. I'm also considering setting up some Github page for listing more of "deploy for free" services and keep that up to date. Would that be useful?
Definitely useful.
I got burned by Railway free tier because it's only 500 hours / month... so it would only work for 20 days per month