They should add login and subscription handling on their website as well like so many do, with 30% off on the subscription fee because there'd be no Google tax.
Damn I should have pushed harder when that incident with WhatsApp was all over the news. Only a few of my friends and a couple of family members switched.
That's a video transcoder. Simple Gallery could crop videos, trim videos, merge them, add filters, text, music and what not. Good thing it's forked by one of the devs who plans to maintain it.
I donated to them directly once and then again opted for the PlayStore versions to buy these apps. Sadly, I will have to move to the FDroid version now because the PlayStore one, the ones I paid for, can get infected with adware any day now.
Contact YOU app has SMS inbuilt. The SMS support is in very early stage so buggy but the dev is going on at an amazing pace. Just give it a few more months.
For dialer, I'd keep using the simple app for now. There's Koler with material you theme but it hasn't seen dev in 5 months and doesn't have all the feature like regex-based call blocking.
Simple Gallery has a feature rich photo and video editor as well. I haven't found any FOSS app that can edit videos. Also, any Material You themed Dialer app? Don't want to use the old AOSP one :(
Other than these two, I think all other apps have good alternatives.
For Contacts and Clock, use YOU apps. I don't think anything can replace the Gallery, I'll continue using the current version for as long as there's a new community-maintained fork. It's quite stable really, doesn't really need changing this very moment.
I wonder if you can install their android app using WayDroid and then run 1080p/4k streams.
Prolly not worth the effort considering they're treating linux users like shit, they don't deserve our money.