As for LTC, I don’t think support for it from miners and enthusiasts will wane, but we shouldn’t expect massive interest in LTC. In fact, the only ones who can create hype around LTC right now are institutional investors, if they suddenly decide to buy up ETFs. But unfortunately, that isn’t happening yet.
I agree, the miners will stay because if it's still profitable for them then they shall stay.
But the interest of the many is decreasing and I think most of the investors who have been so enthusiastic about it are only looking at its price.
Even with so much things happen surrounds it like a halving, it doesn't changes the interest that people puts in it anymore.