Nah, I think you can still buy some good guitars sight unseen. Gibson IMO has forgotten the phrase 'quality control' and have lost their Pride.
Fender Custom Shop, Paul Reed Smith, just two names have bought sight unseen and have been PERFECT.
I bought my Ibanez JS1000BTB sight unseen but will never again do so. It's actually a great guitar and I love it but having played several Gibson's and Fenders in-store I realise just how variable quality can be even on supposedly professional grade instruments. It can be a risk with any manufacturer.
The last big shock I had was actually a Fender custom shop Strat priced around £1900 that, to me, felt truly awful. It was inherently "tight" to play and the sound lacked character. I got to A-B it in-store with an old JV Strat costing a 3rd of the price and it was a no-brainer which was the better guitar. If I'd bought the custom shop sight unseen I'd have been mortified! :)
Not that I'm saying Fender are as bad as Gibson (far from it); my own LP Classic has finishing issues that annoyed me so much at one point in the first year that I hated the guitar. Now I don't give a cr@p about the finish and love it for the feel and the vibe.
If you test a handful of guitars of the same model, some will
feel better than others. If one stands out, you'll know you've found your guitar.