Those who invested in bitcoin at the time when it was launched and forgot about it, there are many among these who forgot their password. That is like losing all your money just because you held very long. Those who are investing now and plan to hold forever, are they in better position or their fate will be similar ?
There is no connection between storing Bitcoin long-term and losing or forgetting the seedphrase. It is all about mistakes or negligence in maintaining a personal wallet.
True, people always trying to find the negative thing that is fixable in just few steps. It's 2026, there are bunch of ways to avoid mistakes such as losing the seed phrase and I don't think it's a major problem today. There are ways like writing it on paper, locking the seed phrase or memorizing it like it's ABC. Forgetting password is just a 5% problem today, if you have a bunch of BTC which is very valuable today, why would you forget the seed? It doesn't make sense. One of the major problems today IMO, is the hacking of wallets, some are unstoppable.