Still incorrect......it is anecdotal evidence but heavily cited that a majority of watch makers choose to wear Rolex....sure some wear none....some wear quartz...that said as a brand marketer it is a brand managers duty to hypothesize why and drive a brand vision in that direction. An assumption that it is the choice based on quality (ease of repair) is the right hypothesis test. Happy to help you achieve marketing enlightenment. No never worked for Rolex but I have worked with prestige brands on consumer segmentation and needs states analysis.
I know a lot of watchmakers and have been to several conventions where hundreds of watchmakers are present, and they wear all sorts of different watches. Yes, some wear Rolex, Omega, Tag, PP, VC, Bulova, some carry pocket watches and really any number of other brands. I certainly recall one who wore a watch made Roger Smith, because you don't see those every day.
There is a very strong correlation between what these people work on day to day, and what they wear. If you are watchmaker at a Rolex dealer, yes it's logical you will be wearing a Rolex. Not because it's superior technically to other brands, but because you get a discount on the watch to start, you fix them all day long, and your boss would likely encourage you to wear what they sell so when you come out to speak to a customer it will again make people think exactly as you are doing - because the guy who repairs them is wearing one, they must be the best. And of course, you have ready access to repair parts. Before I became a watchmaker, I didn't own an Omega (had no interest in them to be honest), and now I own 3, and Omega is the brand I service the most - it's not a coincidence.
I have been to other places outside of conventions where there are 50+ watchmakers all in one place, and I can assure you not one of them was wearing a Rolex. When I went through the Blancpain factory, not one was wearing a Rolex who worked there. When I went through the JLC factory, again no one wearing a Rolex, same with AP, VC, PP, Chopard, well you should be getting the picture...again where you work and what you work on has a big impact on what watch you wear.
As a watchmaker, I can tell you that ease of repair is not necessarily related to the quality of the movement in many ways. Having access to parts is key as Ash has stated. It doesn't matter to a watchmaker if the movement is robust, accurate, etc. because if you can't get parts, it quickly becomes VERY difficult to service.
Rolex is the king of watch marketing and they certainly know what they are doing - I have never argued that so for me that whole aspect as a counter argument is nothing but a straw man. They have everyone convinced their mid-tier watch is the best...a crown for every achievement and all that...
Cheers, Al