Are all alts junk?

I keep hearing this comment, but I’m still just not sure.

I know Bitcoin Is the gold standard, but will Lightning really solve its transactional speed and cost issues? I have 75% of my portfolio in btc, but the rest in ETH, ADA, XRP, SOL. All of these seem to have a reasonable use case. HBAR also got my attention. XRP is in there mainly due to marketing and seeming to convince others that they’ll be used for banking. That confuses me since I thought the goal of crypto was to decentralize so banking comments confuse me.

In wondering if I should just sell off my small holdings in alts and focus on just BTC and maybe BCH. Maybe increase ETH a bit.

Thoughts?