My impression is that it's not so much "too many releases", but rather the massive retail buy-in (remember what just happened to Dick's) that was due to the success of the previous lines coupled with products that weren't a fit for what people expect now. They went to the well with the same expectations too many times, and dropped inferior product out there while doing it. 2014 was supposed to be a pretty slow year for them, but they dropped and disappeared Jetspeed (inferior in today's environment) in a matter of months and then did the same with SLDRs (again, inferior in the sense of new technology) just a short while later. Huge misteps by both TM and their retail partners.
It's not releases. Other companies have released a bunch of stuff and done ok. Instead, it's a bunch of releases with massive buy-ins that were poor product lines.
This was my thought as well. I think the 2014 line was just a bad release cycle for them. Outside of irons, everything else seemed to fall flat for whatever reason. Couple that with other OEM's (Callaway & Cobra) just killing it with new design/technology & they suffered WAY MORE than they anticipated. Seems like they got complacent being at the top and thought anything they threw out there would sell & it didn't. I'm also a believer that the global economy plays a factor, and like in the US, discretionary income just isn't there for the golfers that bought the latest and greatest on a whim. IMO that is affecting not only retail sales, but also rounds played and green grass revenue as well.