He only had one lose against George Kambosos Jr, the boxer that was schooled by Devin Haney two times. Teo had a statement that he was not anymore comfortable on that weight os he moved up and he proved his excuse was true. Beating Josh Taylor who's also a champion, that would say a lot about the skills of Teo, and as long as he is very confident in the division he's holding now, I doubt a challenger who failed against Loma has a chance of upsetting him.
What we are seeing on Teo now is a more matured and smarter boxer. His loss to Kambosos was a wake up call that he cannot be too cocky all the time and underestimate his opponent.
If we watch again the fight, we will see that Teo aren't playing defense and was just trying to look for a one punch KO, but it's unfortunate for him as Kambosos wasn't playing around, he was too focus with his counterpunches that hurt Teo although Teo survived in the fight. That mistake will never happen again.