Yes, the old coins are the strong piller of the cryptocurrency community till date. Just imagine some of these old coins like, ADA, MATIC, EOS, XRP, BCH, LTC etc; without their continuity on the Cryptocurrency economy it would have been very hard to believe the the new coins will ever survive especially during the past bear markets periods.
Honestly, the old coins has given some of us the hope to even invest on the new startup projects out there. All the old coins that has survived through the bear markets since 2018 are the hope of the cryptocurrency community growth. I strongly believe on the Old coins, and still holding/trading some of them.