Back in 2020, those of us who had been using the community document server were greeted with a notification stating that mobile editing was no longer supported and that we'd have to buy their commercial product.
Some folks quickly figured out a patch. Others, like myself, left with a bad taste in our mouths.
In the end, I can only speak for myself, but I chose LibreOffice and The Document Foundation for philosophical reasons.
https://github.com/nextcloud/documentserver_community/issues/94