How gear limited would I be if I only do BGs?

Hi all - I like BGs.

I don't like raids, or dungeons, or world quests, or covenant things, or arenas, and sadly - don't have the time/interest to climb in RBGs.

I'm a simple man, I just like to queue up to a random BG and fight random dudes.

How boned will I be? Watching some wow streamer types its not uncommon to see them fight people in BGs who have literally 1/3 their HP (and so I'm assuming 1/3 the stats).

I know I won't be top tier, but if random BGs is going to make up 100% of my gameplay it would be nice if I was at least competitive.

Is this possible, or do I need to do my chores before I can play the game?

Thanks,