if say they're held at 7000, and get told to go down to 2000... U'll see them dive @300KIAS or so :o ... the reason being many new FOs I'm told, keep SPD on 210 on the MCP, but select V/S at 3000fpm
this is also bullsh_t, after a brief level off with 210 knots, you won't get near 300 knots with 3000 fpm V/S to loose 5000ft, UNLESS you put some N1.
If I was the following traffic behind, at the same flight level in descent, at 10NM behind, and we had to go to select 210KIAS in order not to converge and later requested to deviate... is it as you say bullsh_t
at a certain point .. YES! HE is your traffic, not the other way around.
you don't seem to know flying, boy! let alone current on transport-jet.
there are a lot of fake pilots, don't listen to them.