Of course there is an option, you don't actually have to buy this phone. There is no reason why anyone would be so desperate to buy the phone now that they would willingly buy it when its locked to a different network that's known to have spotty support for the platform. It will either be sold in other parts of the world in a few months or an equivalent (or better), more accessible device will come along.
Over the last few years I have used the best WP devices (Lumia 920, 1020 and 1520.3) and it was on Tmobile where they were never officially carried. I'm using a Lumia 1520.3 in the US right now and wouldn't buy the Alcatel for any reason, especially when you consider how Tmobile has abandoned phones after only a few months. So no, I don't see a reason why anyone would buy this locked to Tmo, its just not worth it in the end.