One of these “experts” confidently broadcasts:

“Yaroslav the Wise also expelled Ivan Kalita for non-payment of taxes, and he founded Muscovy on the outskirts of Kievan Rus. And then Yuri Dolgoruky built the first Kremlin.”

And now let’s turn to the chronology of the real, not invented:

Yaroslav the Wise died in 1054.
Ivan Kalita died in 1340.
Yuri Dolgoruky died in 1157.