Hehe, just because you CAN contend GPON doesn't mean you have to congest. If you design GPON properly, you'll monitor each port and if any come close to congestion, you can lower the split ratio where necessary, giving more bandwidth. Also, this guy needs to go look up XGS-PON and 50 GPON. Eventually when the average consumer orders high enough bandwidth services to saturate a GPON port, you would overlay an XGS-PON layer on the same fibre, increasing your fibre bandwidth by 10, and his switches will need replacing every few years anyway. This is all marketing fluff and doesn't truly translate to customer experience. Even on a business side, you can actually dedicate bandwidth on a GPON network, so you'll never contend. The only true advantage for AE is a symmetrical 1G service, which is a bit too close for comfort for a standard GPON network.
But I digress, the guys are trying to differentiate themselves and are overreaching quite a bit - nothing new.