I think this is a bargain at 180 USD. Even the 230€ price tag is cheap. A very good alternative to enter the L-Mount at bargain prices. This is very good for the L-Mount. We need more of these cheaper options to make it easier for less affluent users to enter the L-Mount.
In general, I like the 75mm focal lenght very much. It is a very good compromise between 50mm and the typical 85/90mm portrait lenses. Not too close, but neither too far away to interact with i.e. models.
In L-Mount we have currently the steps 50mm, 65mm, 85mm and 90mm only. The Sigma 65/2.0 DG DN would be the cosest alternative. Same size, same weight. BUT it costs 699€ (street price) vs. 230€ for the TT Artisan 75/2.0. Of course the Sigma 65 will be optically better. But that is almost 3x the price.
I almost never use my Sigma 65mm because for my use cases, it is too close to the 50mm and for people too "clinical" sharp. I would much a 75mm FFL. 85/90mm is again a step too far in many situations, although I absolutely love my Sigma 90/2.8 DG DN. But a 75mm FFL is more versatile. I would rather take a less "perfect" 75mm than a "perfect" 65mm with me.
Would be great combo with a 28mm FFL or a trinity of 28/2.0, 50/2.0 and 75/2.0.
I think Sigma is the Zeiss nowadays. It is not cheap anymore, but wth almost all lenses bets in class or among best in class. The Sigma i-series is almost perfect and I wonder why some of them did not get the batch "Art". Maybe a marketing decision.
But this leaves space in the entry level price category, which every system needs nowadays to seduce smartphone users. TT Artisan and others can fill the price gaps, which Sigma, Panasonic and Leica do not want to offer.