If I run into a problem, there is no way I will be creating an account on Discord to get help. It might not be worth the time and effort. A searchable forum is good enough.

I use Discord, but I actually agree with this. It's a really good platform for small groups of people to communicate with each other - for example, we have one for my class at university, which allows us to keep in contact about assignments, projects, deadlines, etc. What I don't want to do is join a Discord server for every single game or piece of software I need help with. It's just not a great platform for having hundreds or thousands of people trying to get help, often asking the same questions over and over, while the community regulars are chatting about their personal lives.

Searchable forums, website-based FAQs and help files, or any other option that makes help accessible without having to download new software or sign up for new accounts, are the most suitable options for making help available.