Another problem (which Litestream might solve) is that SQLite is not compatible with Heroku, that I use since I don't have much ops/sysadmin experience. I feel like people saying that SQLite makes things easier often have already some experience in sysadmin/ops stuff, which isn't my case.
This is not a criticism of SQLite in any way, just an expression of my own limitations and why it makes it harder for me to consider SQLite. I'll gladly take any learning resources about that.