As far as most people fine the 45g Topre linear...really? Who is that? If it was anywhere near linear these same people would be able to not bottom out..and that isn't happening so we know that isn't the case....there is a collapse of the dome which separates it from being linear...
30g Topre though...IMO is almost linear...the collapse of the dome is so subtle and 90% of the reason why people have the aaaaaaaa issue with variable Topre...
Well personally I find it tactile, but I know a lot of people find 45g too linear that's why they opt in for the 55g Topre. I think the difference is probably like between people who like MX Red/Brown and people who likes buckling spring.
Though as for the 45g vs variable thing, I made sure I bought a 45g because I know I'll most likely game on this keyboard too so variable might be a little bit weird when I shift my hand position for gaming.
Funny thing though for those people who think 45g is too light that they want to go for 55g, at the moment I find 45g slightly heavy (since I came from MX Red also I'm guessing cuz the cup rubber is new need to be broken in).