It is very very easy to get sucked into the marketing machine hype...especially at these price points.
As a player, I sometimes put too much emphasis on the guitar instead of the playing.
Is the guitar playing me? Or am I playing the guitar? How many do I need?
I've never had an audience member come up and say "wow that would have sounded better on a new 614". They could not care less whether it's a Martin, a Taylor or a Sigma. Guitar players are different...they might say something about it. But your typical audience member doesn't care at all. So playing live for people, it's all about the playing, not the guitar.
When it comes right down to it, a good song played well will sound great on a legacy 618, a new 814 or a plywood Cort. When I hear Tommy Emmanuel play, I can't tell what guitar he is playing. It doesn't matter. He sounds like Tommy no matter what he is playing. His Maton's are not my favorite...but he would sound like Tommy on any brand he chose.
We guitar players are a funny bunch...and very particular about our guitars. This makes us easy targets for the marketing machine. Sitting ducks if you will. And I quack right along with the loudest ducks out there! AND I love my Taylors...including my HOG 518e. It gives me great satisfaction to sit and play it...all by myself.
Fair point for anyone who is honest with themselves..... about
playing live. Most of my playing is as a hobby for myself, so in a quiet environment or intimate setting I can very much tell the difference, and I matter a lot.

I'm about to be at the optimum point (again) as far as number of acoustics, excluding my electrics as this is a Taylor forum:
K24ce - General purpose guitar, flatpicking, strumming, etc.
Custom GC - fingerstyle
GS Mini Koa - travel/couch/outdoors/beach
(soon to be) 656ce-FE - for that 12 string sound (btw, 8 out of 10 could tell the difference live between a 12 string and a 6 string)
And that's it. Don't need no mo'. I view the last two as "utility" guitars with a defined purpose. Could I "get by" without one of the first two? Yeah, but I sure don't know which one I would give up. Well, yes I do, based on how that Custom sounds, I'd kiss that K24 goodbye in a heartbeat if forced to choose. Really. The Custom is that good. But I like having several acoustics when I use alternate tunings. Pain in the butt retuning when you can have one sitting there with regular tuning, one with DADGAD, etc.
Also, besides making a difference in a
room, there's also
recording. And folks can and would perceive differences there, as the intimacy of recording shines a light on tonal differences.
But live? Yeah, doesn't matter for all intents and purposes.