It took me years to train my brain to not read outdoor advertisement. I can't stop it from seeing/interpreting images, but I can successfully ignore text/letters which are less than a meter in size.
Yes, you can. You can use a different browser such as Mozilla Firefox, or use DNS-based blocking such as Pi-Hole. I use both of these, and use WireGuard to reach my Pi-Hole. If I have a network connection, I have an adblocker.
Sounds like a horrible feature. Selecting data makes you Google it? What if you copy/paste a password. Vimium does it right for me, but requires physical keyboard.
Selecting text in my world is either copying text, or selecting text. Not searching for that text on a search engine. That shouldn't be the default (most common) keybind.
Anyway, you can still use DNS-based (with or without VPN) filtering.