To paraphrase Dr. Manhattan, "Nothing ends, Keith. Nothing ever ends."
That mentality has been around even since the show came on in 1993. I've been there. And I saw it all as one who was already into Japanese sci-fi, including Super Sentai. Some people still think that way. You can't ever stop it, unfortunately.
Personally, I'm glad the show is over. But, I'm not going to go full force into everyone's faces and say, "HA HA HA!!! POWER RANGERS IS DEAD!!! SUPER SENTAI FOREVER!!!" I've grown up from that adolescent temptation. But I'm personally glad that Super Sentai can finally be free from Power Ranger influence, at least for a time. While people will miss anticipating which show will be Americanized, the fun for me has always simply been anticipating what new show will be on in Japan. What Toei will do with Super Sentai remains to be seen, but at least they can move on about their business and keep making shows fans can look forward to. Back in my day, it was buying/trading tapes. Now, for you young ones, it's torrent downloading! You can all be thankful for that.
Just my 2 yen.