I just had a talk with a friend who doesn't hold any crypto but is interested in it and in blockchain tech in general... His first observation regarding TRUMP tokens and other meme coins was similar to what you said...
For people who don't know about crypto, after their meme coin "experience" the WHOLE crypto is a joke and a big gambling machine... Which is far away from reality and the real value that crypto brings to the space!
Yes, first impressions do matter unfortunately, so it may take sometime before these kind of people change their mind on crypto. But I think they'll come around eventually, as this space is empowering in ways that can't be seen in other other industry.