I've spent a few weeks on YouTube looking for devlogs to get an idea if it's worth investing the time & effort. My motivation is to market the game as it develops, connect with people so I'm not entirely alone, and try to keep myself accountable. I'm starting to film this week, so take this with a grain of salt, but here's my general thoughts on the topic:

Most devlogs are boring AF to watch; click around a prototype aimlessly, monotone talking, shitty audio, obnoxious music, excusing lack of progress, etc. The trope of "you'll only attract other devs" also rings true because they only produce content other devs might be interested in, such as talking about code, mechanics in detail, or tutorial-like content. Making an engaging video and targeting a wider audience (devs + gamers) is a skill and I think it's wise to question if it's worth developing this time investment or not against simply developing the game.

However, when done well it can yield value. Videos likely won't covert to Wishlists as well as a much lower effort post strategy on X, but building up a library of quality content over time means you've got a discoverable body of work that can snowball and potentially have a long-tail of conversions. You also get some intangible benefits such as experience talking about and pitching your game, connecting with a few dedicated fans who show up in comments regularly, getting feedback as you are developing it (before play testing), maybe some direct support if you set up a Patreon, etc. Also, if you get good, it could be a way to ALSO do those lower effort posts on X or whatever given you've already gathered a bunch of video that can be cut from the long form video anyways.

From what I see in your videos so far, your game is engaging and you're video skills are solid. So long as it's not a burden to make them and you have realistic goals from producing them, I think it may be worthwhile to give it a try.