I'm a lifelong CA resident, so DLR is home for me, but I also love WDW.
That said, based on what I've read about how things have been at WDW since COVID hit, if my first visit to WDW was right now, or during the past year and a half, I don't think I'd love it nearly as much as I do, and I may decide to write it off entirely and stick with DLR. Our last visit to WDW was July of 2019. It was magical. We stayed at YC, went to 3 after hours events, took full advantage of extra magic hours, utilized FP+ very effectively, ate 2 table service meals most days, etc etc. Many of the things we love the most (DAH, EMH, Hoop de Doo, and I know there's more...) are still not back post COVID.
I went to DLR in June 2021 and had a completely magical time. Many of the things I love were missing - fireworks, dining locations, the Matterhorn, Jungle Cruise, parades/performances, and more...but I know DLR very well, and so I still loved it. I understood that this was not 100% what DLR actually is. I hope all of those things come back eventually (and it does look like they're trickling back slowly...), but to be honest, I have a wonderful time at DLR no matter what is or isn't part of the experience.
I just wanted to offer a different perspective. Others have said it here, but DLR is not 100% right now. And neither is WDW. Please don't take this one experience as indicative of what DLR actually is all of the time.
About the crowds - DLR will always feel more crowded than WDW because the walkways are smaller, especially DL itself. However, we've found the wait times at WDW to be far worse than DLR in general. So, the "feel" of crowds can be misleading.
About the food - it's a common opinion around the boards (and one I share) that DLR generally has better counter service, and WDW generally has better table service. Of course you can find good CS at WDW and good TS at DLR, but just in general. DLR actually has a lot of really unique and delicious non-carnival food CS options. Some examples - DL: Plaza Inn, Tropical Hideaway, Bengal BBQ, Royal Street Veranda, Rancho Del Zocalo. DCA: Pacific Wharf, Lucky Fortune Cookery, Boardwalk Pizza/Pasta (ok...that one's still closed). Maybe look at some of their menus and see if anything appeals to you.
ETA: I am not a Six Flags fan by any stretch of the imagination. I went to Magic Mountain once in my life, and once was enough. Calling Disneyland the same as Six Flags is.........well, I hope it's hyperbole, but it's pretty offensive hyperbole to post on a Disneyland specific board, that's for sure.