They are metadata that are inscribe on bitcoin, some investors loves it because of the quick gains and not for the tech. Some days ago, it was reported that ordinals interest from investors have been half since June but I am not sure whether it was that news that trigger them to come back to bitcoin again. To me, it's best they allow these guys do their spamming on other smart contracts blockchain knowing fully how bitcoin network is becoming too unusable during halving, this will only double our challenge in transaction but I forgot that Miners are happy about it.
What are will advise you to do, if you have multiples of outputs in different wallet and you have plans to use them or send them in near future, consolidate them together into one wallet. It might request for high fees but do that on weekends, you will enjoy that when you send bitcoin from a single wallet address than combine these outputs all together, you will be paying more fees than the outputs if halving should remain 2 months.