I agree that paid options of heroku hasn't been competitive for a long time. But removing the free, hobby tier suddenly makes hundreds of programming tutorials outdated which affects students and job seekers, I highly doubt that the students from obscure schools from around the world would be covered by the to-be announced education program and these are the groups who cannot spend any money.
Fortunately there are great alternatives[1] for PaaS and for those who can manage the server there's Oracle Cloud free-tier which offers 24GB RAM 4 Core ARM Server which can be used as single machine or split into 4 VMs and 2 x86 1GB RAM 2 Core VMs with 200 GB Block Volume in total. But Oracle Cloud free-tier has lots of quirks and often requires a script[2] to provision the machines(Due to demand).
Fortunately there are great alternatives[1] for PaaS and for those who can manage the server there's Oracle Cloud free-tier which offers 24GB RAM 4 Core ARM Server which can be used as single machine or split into 4 VMs and 2 x86 1GB RAM 2 Core VMs with 200 GB Block Volume in total. But Oracle Cloud free-tier has lots of quirks and often requires a script[2] to provision the machines(Due to demand).
[1] https://startuptoolchain.com/#cloud (Disclosure: My curated list of startup tools).
[2] https://abishekmuthian.com/oracle-cloud-free-tier-quirks/ (Disclosure: My blog where I've detailed Oracle Cloud free-tier quirks with solutions).