I don't think so

Satoshi was a libertarian, in favor of free market. In free markets everyone has the opportunity to fairly compete. In a free market there are many options of any product, not oligopolies, or monopolies.

Also, he released Bitcoin as open source software. Open source software is well known for been cloned a lot. For example, we have literally thousands of Linux clones. If he didn't want/expect bitcoin to be cloned, he would have never released it as open source.

I'm very sure Satoshi supports every single altcoin.