I can't find a discussion about craft=tailor and shop=tailor.
Key:craft says: A place producing or processing customized goods. To differentiate between trade, service and craft, this proposal wants to reserve shop=* for trade (focused on selling pre-produced goods) and creates new key craft=* for a small production of goods on demand and by an order. I find this description more fitting to a tailor.
I disagree with this redirect. Tailoring is clearly a craft, comparable to shoemaking, for which we have craft=shoemaker. We should not discourage the more consistent tag just it has a slightly lower usage, historically. --Polarbear w (talk) 11:39, 9 February 2016 (UTC)