I might as well be very much wrong, but I do have a theory... As you guys probably know, AT-LP120 used to come with "professional" ATP-2 cart & stylus, more suitable for DJ application than a regular HiFi one. However, most people didn't want LP120 for mixing & scratching, but instead were looking for a cheap & solid HiFi unit, so Audio Technica gave up on the initial idea & changed the cart for AT95E, 0.4 x 0.7. In fact, I personally remember online comments about PL-120 back in 2012, 2013 (not to be confused with LP-120), where people said they would buy 120, only if it had a better & more suitable cart & stylus. I was in the market for a new USB (or at least with built-in preamp) table back then & was considering PL/LP 120, but it seemed too expensive at the time.
So, what I'm guessing is that Audio Technica decided to move on with this idea, top it up if you wish. Because selling the LP120 with 95E is now old news, but upgrading the 95E to a smaller size (making it even better?) will theoretically attract even more people into buying one separately, or even buying LP120 that's bundled with one right from the factory. And TBH, I wouldn't be surprised if AT would decide to abandon 95E altogether, exactly what
@boreas wrote on the previous page. Besides, LP120 now already has the same headshell as LP5, which is half-way there. By replacing the stylus for "EX", they'll end up with identical assembly for both units, of which both are very popular & high in demand. And having one design for both models translates to less production cost for AT, which equals better sale for less money invested.
Of course - with that being said, I could still be very much wrong & far from truth...