A degree ensures you have learned all the basics which experts in the field believe you need for a solid foundation. It answers and formalizes the "I want to do/be X, what must I learn?" question. Yes, doing something like this would be very much worth your while; I've got two (accredited) degrees in the subject, and still might just run thru this as a refresher.

Time and again over two decades, I've seen self-taught software developers do well, yet stumble into educational gaps/traps any degreed developer would have learned to avoid. All too often they can't perceive what's missing because they're not aware of the advanced material which retroactively fills those gaps. A formal education includes a lot of "do it this way, you'll understand later" which was learned via tremendous cost in hours, effort, and money in the industry, stuff which the self-taught by definition are unaware of and can only (if ever) learn the hard way. It also includes a lot of "there are other ways to do this" that one won't pursue unless compelled, and thus expands the toolbox. It's also embarrassing for the self-taught to go years without learning something which is standard first/second-year material (like having a self-appointed software architect get all excited about discovering state machines, and proceed to implement them in an inappropriate manner).

Do it. Fill in the gaps you're unaware of. Listen to people who say "trust me, you really do need to do it this way, even if you won't understand why for a while." Yes, you can learn it all on your own, but it will likely take longer. Life is finite.