Here's a philosophical question: Can you be a Bitcoin Maximalist and still have some pet alts?
My alts are only 3% of my crypto portfolio. 97% in btc and I consider myself a btc maximalist.
Alts are like lottery tickets to me in this space (crypto) just like bitcoin once was a lottery ticket to me that I wouldn't hold more than %5-8.
A bitcoin maximalist can have 0% bitcoin in theory. Maximalism is just about how you define your goal. What is it that you are trying to acquire the most that you can of? If you want the most bitcoins that you can possably have at some point in the future, perhaps the best path towards that goal is to have no bitcoins at all at the present time.