new tokens are still impossible to find on metamask and in app trading is from the stone age

icebreaker.xyz/0xen |
https://gallery.so/Oxen/galleries | https://opensea.io/collection/farcats

so many sites still force feed it to you and having more that one wallet extension causes so many problems

If you use the Rainbow extension, you can still click on the Metamask option on any website and it will open your Rainbow wallet instead.

They just use Metamask as shorthand for in browser wallet. 

In reality I have had less problems with Rabby personally than MM. 
Rainbow can be hit or miss because it doesn't play well with older web3 libraries that some sites might use. 

You could also try @frame but that is a very different experience.