I'm glad you use lightning. I agree securety needs working on. there are solutions now where the signing device/keys are separate from the node. I agree it's not perfect yet, but it's being worked on.
yes Monero exists, but you still do need layers like lightning and liquid. I'm not convinced Monero alone could deliver the scale that Bitcoin plus lightning/liquid do deliver.
I think it's been very long since Haveno started. 2020 I think, and still it's not up and running (as far as i know). My point is that it's simplistic to say "all these things being built by and for Bitcoin can simply be adopted by other protocol coins." . It matters that they are being built with bitcoin only in mind. no need to have security trade-offs to support multiple coins. On the other hand, enhancements tested in Litecoin (taproot/segwit or whichever it was) can then be implemented in bitcoin with enough testing. bitcoin is in no rush to innovate at the base layer, and that's a feature not a bug.

anyways, I have much love for Monero and privacy! you'll see my original post was promoting privacy by default!