I've been in this space since 2014. I have always been a Bitcoin Maximalist. Than 2017 happened, and it was hard not to chase altcoins. After the hype died down, and the dust settled, I realized that there is room to be a BITCOIN/ETHEREUM Maximalist. Every other project is a "me too," or a clone, or redundant, or vaporware. The only two blockchains we need right now are Bitcoin and Ethereum...and we need BOTH! Not just Bitcoin anymore.
I love Bitcoin...LOVE it! But when it really comes down to it, I use Ethereum in actual, practical use cases. I recently bought something in USDC...which utilizes Ethereum. Stablescoins, ICOs, IEOs, SEOs, Defi will be built on Ethereum.
I have fallen in love with Ethereum as hard as Bitcoin, and I see value in both. Ethereum is extremely elegant, and may end up being more important in this space than Bitcoin one day. It is the foundation of the Defi movement.
So there can be a category of people who consider themselves BTC/ETH Maximalists.
I am not surprised, bitcoin is without a doubt the leader of this market and the image as well, but if we were to think of any other coin that is very useful and has a lot of potential then ethereum is definitely that coin, besides bitcoin the only other coin in which I am invested is ethereum because I really think that despite its current weakness it will surely recover in the future and when that happens I am going to be ready holding some ethereum to take advantage of it.