I'm not advocating for the removal of either.
I was saying having two buttons that do nothing but damage and dont interact with the rest of your kit is bad design. Having to take a talent to make LL 'matter' when it's been such an important part of enhancement for so long is also in my opinion bad design. Having that talent compete with the talent that makes you care about rockbiter is (imo) a compounding issue of that bad design.
There's an option to incentivise players to feel good about pressing LL, baseline interactivity. For example, in Cata it spread flame shock so it felt good in AoE and it synergised with searing totem as while searing was active the target took more damage from LL (which would help the issue of searing also being a button with no interactivity with the rest of the kit unless you take a talent).
My point isn't those examples are good or bad, my point is; buttons you press because it's a button you have to press shouldn't be the primary motivation to press buttons.