Nope. Montana had Rice for 2 championships. In fact during the 80's 49ers had a total of 5 players that were on all 4 championship teams. Contrasting that with Pittsburgh teams of the 70s that had like 30 dudes with 4 rings. As others have mentioned it was a different game when Montana and Bradshaw played too. Just watch old Super Bowl highlights and the difference between now and then is stark.
Back to Mahomes...
I literally said 'What the Fuck' when I saw him get picked based on his time at Tech. It's definitely like a Brady and Belichek pairing with him and Reid. They were made for one another. Mahomes and these young guys that are rolling in have made Pro Football fun to watch again, at least for me. That game last night was Montana-esque for sure but let's see if he can keep it clean and win when it is on the line again. Montana never lost a Super Bowl and never tossed an interception... and yes, I am a giant Montana homer. Chiefs management and coaching have done a great job managing the roster around Mahomes too. They have 1 starting OL from the last Super Bowl win. Philadelphia lines were getting all the love but KC's revamped OL kept Mahomes clean. Chiefs have the makings of a dynasty with everything they have right now.