Miss Pearce is a new person in an old game. And I don't think she's fully understood the marketplace despite her number of views and rising status as an influencer would suggest. She offers no catharsis nor any revelation here in this video. Perhaps she's pandering to beginner collectors.
The simplest fact is that JLC is a middling brand. In nearly any product world you either need to be THE BEST (think the Patek Philippe, Vacheron Constantin, Lange, Audemars Piguet, Rolex, and Breguet brands which are recognized as the best - yes, Rolex is recognized as the best sports watch), THE FASTEST TO MARKET (think small independent brands with quirky designs like MING), THE CHEAPEST/BARGAINS (think G Shock, Seiko), or THE INSANELY PRICED (we don't care much for Jacob & Co, but the brand gets a lot of recognition because they are often the most expensive in their category). JLC is in the middle with an "in-the-middle" price point.
Hi, my name is Mr. Moyen. I'm a middle class individual, with a middle-management job, with average interests, I live in an average house, and I drive a mid-sized white sedan, petrol 2.0 liter. I wear a Jaeger-LeCoultre. None of that sounds especially unique. Nobody here is dying to meet Mr. Moyen. However, Mr. Moyen is probably a great person, a loyal friend, and a great neighbor in his community - we just don't know since he seems so average on paper.
The vast majority of people want a Rolex - it's practical, it's recognizable, and unfortunately value retention is a factor for many people's decisions and Rolex is a known commodity.
The people who really want to show that they have something really special want something more special; a Patek Philippe, Vacheron Constantin, or an Audemars Piguet is what appeals to them.
But there isn't really a big niche of people who would necessarily want a JLC watch. Those are people who really like watches. But don't mind the fact that JLCs are sometimes a little too thick (eschewing the French style), don't mind that JLC's finishing is a little too dry, and don't mind that JLCs are rarely superlative at the more "normal" price points. JLC isn't cheap enough to be cheap. And isn't good enough to be among "The Best."
So focusing on that last sentence. JLC isn't cheap enough to be "a bargain" and the standard product isn't good enough to be among "The Best." If you gave that information to any analyst, they would say this company is not likely to see significant growth unless something abnormal happens.
This is common in all luxury goods. People don't want an above average product at an above average price. They want super-good products at super-high prices or they want average products at lower prices.