I think that's fine too. it's better to stay on BTC and ETH only. that has been tested and proven effective. Then, if the AI hype disappears, is there any guarantee that they will last as long as BTC and ETH? yes. This is not a suggestion, but, choose what is certain and has been implemented by many people even though on the other hand investing in hype coins also has the potential to take profit.
The need of doing a deeper research is a must as there are many projects that being used for the hype but with doing your
own research and study, you'll be able to sort it out.
There are established projects and we know that the good examples are Bitcoin and ETH. Both coins are being supported not
just by hypes but also by the development that already being provided and continue being used and enjoyed by many investors and traders.