Yeah fair. I tried setting it up, but honestly probably not worth the effort in home networks. Problem is browsers don’t know that the other end of the unbound DNS server is DoH, so it won’t use ECH. Even once set up, most browsers need to be manually configured to use the local DoH server. Once there’s better OS support and auto config via DDR and/or DNR it’ll be more worth bothering with.
Ah yes the age old problem
If you’re looking for a privacy respecting paid service that’s not just a file locker for pirates I have two recommendations: At a previous workplace, we used LiquidFiles. More catered for commercial uses.
Personally I’ve been using Bitwarden Send. Requires a paid account ($10/year) and limited to 500MB files.