Nah, they can't harm bitcoin.
Those altcoins are trying to surf on bitcoin's wave and enthusiasm. It's thw other way around.
Probably most of hem will just be ignored in a few years or months, as bitcoin has better infrastructure and devs.
You maybe right because of the demand and the popularity of the bitcoin at the moment but considering speed and usability do you think there is a possibility they have advantages over bitcoin to expand more into businesses