I understand where the people who wish for this to remain a PlayStation exclusive are coming from, as Crash 1-3 & CTR are seen as some of the PS1's most famous and important titles. I'm one of those people who, if he had the money, would only buy certain cars in certain colours, i.e. Ferrari in red, Bentley in green. I see it as more of a traditional thing than anything else.
That said, Crash needs all the exposure he can get right now. He doesn't really have the luxury of going exclusive after starring in many, many terrible games since Naughty Dog left the series. The only ones I can recommend are the two platforming GBA games which are actually pretty good, and just so happen to have been made by the same people who are doing this remakemasterplus. Activision are justified in bringing him to as many platforms as possible, to at the very least gauge how popular his games would be nowadays.
I do think this will be a significant title, contrary to some people on this forum. This trilogy does seem to be doing the rounds amongst casual audiences from what I've seen on my Facebook timeline and from speaking to others. I think the timing and price are good too, just in time for summer for when the kids leave school. I also think that Sony will focus on the family this Christmas, and I wouldn't be surprised to see a PS4 w/ Crash and Ratchet as a bundle at a cheap price, but that's just my prediction.