I think 2050 is a long time, I never thought whether Bitcoin or Cryptocurrencies could last until 2050, Nokia, Blackberry, and many others never thought I would sink in a near future, I had heard in 2008 when someone said that Rim (Blackberry ) can last up to 100 years, but 2016 they officially stop.
agreed, 30 years is such a long time frame for technology development, the latest technology advancement have been tremendous, in 30 years, quite literally everything could have changed.
considering that memecoin in general even at this time could literally vanish into thin air I doubt it could even exist in 2040 let alone 2050, since it's just a trend and eventually a trend dies down.