These changes are breaking features in old.reddit like sharing and probably more. You are promoting untested tweaks
Kroko
Old.reddit don't work.
You can't get RCS without Google Messages. An option is using a messaging apps like Beeper https://www.beeper.com/, which can connect to Google Messages (bridge) so you can read your messages in Beeper.
You can uninstall YouTube and most other app with ADB https://github.com/Universal-Debloater-Alliance/universal-android-debloater-next-generation
winutil (ChrisTitusTech) doesn't apply some setting. ShutUp10++ have more options.
rooted device
You can hide root and all other stuff. Only thing you can't get long term is Google Device and Strong integrity.
Yes, NFC works in custom roms. You can replace Google Pay with Curve Pay and others more local options. Some countries have independent payment systems that work ass contactless payment.
Unlocking is possible outside of China https://github.com/melontini/bootloader-unlock-wall-of-shame/blob/main/brands/xiaomi/README.md
Adb command line interface is a major barrier for most users. Even with GUI tools built on top of ADB that still a barrier for many users.
I don't have experience with linux os on phones. You should ask https://www.reddit.com/user/Mister_Magister/. He is community developer of sailfish os https://www.reddit.com/r/linux/comments/1mzla4h/ive_been_daily_driving_and_developing_mobile/
I am doing everything right. Like others have written. You have no idea what you are writing about. Don't waste other people time.