Since 2016, I have been at least 5 times. Haven't been back to Disnelyland Resort since it has reopened due to the pandemic though. But have two friends that live in the LA area and they go pretty regularly.
Going to the
Disneyland Resort (DLR) is
very different than going to Walt Disney World. Yes, there are a lot of similarities with attractions, etc.. But the planning and going to the parks is what is really different. While I love Walt Disney World, I like the ease of DLR and how everything is so close to each other. Transportation at Walt Disney World can be challenging and a long process at times. At DLR, there are many hotels surrounding DLR that are within walking distance of the DLR esplanade. In fact some of the hotels are actually closer to the entrance than the Disneyland Hotel or Paradise Pier. Not to mention that if you have a Park Hopper pass, the entrances to Disney California Adventure and the Disneyland Park are basically 300 yards apart.
When I have been to DLR, as it relates to the LGBTQ+ community, I tended to see more same-sex couples holding hands and being more affectionate than what I would see at Walt Disney World. I don't believe that DLR is more "open" than Walt Disney World with people feeling more comfortable. I think, in some ways, it is just the location of being in Southern California and that DLR has more "locals" than tourists.
About the only real downside, at least to me, is that you do lose some of the immersion and feeling of being in a "bubble" since DLR is surrounded by local Anaheim businesses. Unless you are staying at one of the DLR hotels, you will leave the "bubble" to go back to your hotel. But even with that, I still enjoy DLR and can't wait to go back.
Oh, the other thing that sort of sucks is there is no real good transportation options between the Orange County airport or LAX and DLR resort. At one point, there was some sort of bus charter service similar to Magical Express. But I do not know if that is still running. It would be more equivalent to the Mears Connect now since there is a charge for that service. I used to take Super Shuttle, but they have gone out of business. I am sure you can find charter transportation or you can always take Uber/Lyft. Unless you plan on going to other places or visiting other areas, getting a rental car just to go to DLR is not something I would do.
If there are more specific questions, don't hesitate to ask. Don't forget there is also a dedicated forum just on the Disneyland Resort.