we solved its usecase with tumbling/mixing and running lightning through tor.
Ignoring that multiple mixers can be "unmixed", do you really think the UX / complexity of these two things is comparable to doing a transaction with Monero? Think about the UX of the receiver and sender.
With Lightning for example, you need to figure out how to get your bitcoin onto the network and then also figure out who will host your channel. If you're not running your own LN node (which most people will not), there is a lot of question marks around what is going on when you use LN.
You are right. I wanted to say that moneros solutions are conceptionally deprecated - not that they are useless right now.
I fully agree with your points.
IMO Monero was an interesting experiment and a technology to explore but we solved its usecase with tumbling/mixing and running lightning through tor.