If the company decided to make the UI not friendly, they will likely continue to make user hostile decisions in the name of maximising growth and profits.
In this case using addons seems like playing catch up with low chance of a long term win.
On mobile and non-mobile, I use Firefox' Redirector addon to redirect all reddit links to https://ns.reddit.com/* which might be the same as old.reddit.com
If the company decided to make the UI not friendly, they will likely continue to make user hostile decisions in the name of maximising growth and profits.
In this case using addons seems like playing catch up with low chance of a long term win.