Not true, they were never considered the best on the grid. RedBull would never put "the best on the grid" in the same team as max as the management of that situation would get very ugly very quickly, just see hamiton and rosberg or hamilton and alonso, piquet and mansell, senna and prost.
Also albon and gasly struggled with the RB back then which was designed around max with a pointy front end and a rear that would snap mid corner and need to be corrected.
There are a number of drivers who could match max in the same machinery and beat him. Some of those are pub conversations i.e. hamilton and alonso. The others it remains to be seen, i.e. leclerc, lando, pisatri if they ever get the chance.
As mclaren progress in last two races shows, F1 is 90% the car and 10% the driver now. Get a good car and you can leap up the grid. Suddenly your drivers look so much better.
Personally i dont give two shits about the rollacoster behind max, i want to see a proper championship battle. So do many people, seasons of utter domination ala schmacher, hamiltomn, verstappen are a massive turn off for many people.