I don't think so. Single-master, multi-reader is the most common clustering pattern for all these databases. If you lose the app server that's handling writes in any of those systems, you have the same problem. Meanwhile, when your app server is down, the sqlite database is just fine, and so is Litestream.
I'm not thinking very careful in answering this, but I think there's a subtlety I'm not capturing well here, and that it's not the case that this pattern has poorer fail-over than clustered Postgres. I think there are more things that can go wrong with Postgres.
I'm not thinking very careful in answering this, but I think there's a subtlety I'm not capturing well here, and that it's not the case that this pattern has poorer fail-over than clustered Postgres. I think there are more things that can go wrong with Postgres.