Everyone has their own opinion in choosing a coin to hold on to during the bull run, I personally prefer to keep old coins that have definitely gone through ups and downs.
New tokens are only for momentary profit, not for investment
You are on point, we have our choices and preferences, and the way we follow these coins and tokens varies and matters a lot. As for me, old and new projects are always good, it depends on the particular ones we are talking about. You can see the recently launched $DYM, what a beautiful project. Though I missed out due to my laxity, I didn't just know why I never took it seriously despite seeing the price at about $2.3. It nevertheless moved to over $8 in a few days, which means I would have conveniently earned x3 in less than 3 days.
Going forward, I believe this project will continue to make headway, it is a good project, and despite being new, you can see it moving in multiple of its current value in the next 1.5 years from now. There are many other examples I can cite. Is it PENDLE, INJ and many more? It is all about many other factors and not only about old or new projects alone. But in all, I believe that new projects are performing better than most old projects, we should be smart about this.