There are a few things that I always disable in Firefox because I consider them to be spyware/adware/bloatware:
- Telemetry (telemetry should be opt-in, not opt-out)
- DNS-over-HTTPS (Mozilla's implementation sends all DNS data to Cloudflare and can be quite buggy)
- Pocket Extension (not useful to 99% of users and only included by default because Mozilla owns Pocket)
- Sponsored Articles (literally adware)
- "Recommend extensions/features as you browse" (shows annoying popups while you browse the internet and often used by Mozilla to promote their other products)
It would be nice if Solus could disable these by default.