I am not degrading any of the altcoins, they can actually have potential but assuming that risks are real. There are much more risk in alts than in bitcoins.
Bitcoin is just starting to evolve and many already dropped their chance. LN will definitely gain attention now and will boost bitcoin more.
New traders will always be prey to fuds and there will be people who will take advantage of that of course. Though as much as we all know bitcoin will always be top dog, the last part of 2017 showed us that that won't always be the case. Alts will be relevant in the future of crypto, not just bitcoin