Many of these old coins are going to die this bullmarket reason being that they offer nothing to the space and no one is actually using them, those that rebrand and adapt to the present reality would survive but those that do not would die, just check the front page of coinmarketcap in 2015 and 2016 and you will understand what I am saying
yes I understand what you mean, a lot of old projects can't develop because they don't have new programs like DEFI,
and the prices are still very bad, unlike the old projects that follow development, they have better value