I think Omega is a great brand and generally doing a great job.
They have two iconic watches with the Speedmaster Pro and Seamaster Pro 300m, when many other brands struggle to put even one watch on the map. They have many great alternative options like Aqua Terra, Planet Ocean, Railmaster, and etc.
I have an issue with how they tend to put everything under the Seamaster name, but I don't think that's a horrible issue. Tudor has the same problem with putting everything under BlackBay name, and that doesn't ruin that brand.
I haven't had a chance to watch the Jenni Elle's take on Omega, so I'll have to give it a watch to see what she means. But as of right now I would disagree. I think Omega's brand identity is luxury watch with very durable tool watch capability. Their visual identity is embedded in their heritage models like the 1957 trilogy and other key models through out their brand history.
Nico Leonard, honestly I think has a reseller's confirmation bias. He gets positive reinforcement from liking a certain popular watches like Royal Oak and Daytona, while he get negative reinforcement from brands like Omega that struggles more on the secondary market. Not saying he is completely biased or wrong in his take, but I do see that his taste tends to sway with the secondary value of a watch. I'm not blaming him for his views btw. I think it's unavoidable given the business he is in, and it's better for his business to have this bias. I just put that bias into account when I watch his content.