The whole comparison to real world sports i apt. Football (soccer, if you will) has been through this already. Most pundits are also ex- footballers in the mainstream but there are also loads of journalist and fan pundits out there now. The idea that only professionals can comment on the sport is a discussion that was had an dis long over.
To give a specific example- Gary Neville. Used to play for Manchester United, and enjoyed repeated successes with that team. Won counntless medals and trophies. Went into punditry and revolutionized the commentary game with thorough in depth tactical analaysis. Forced all other television pundits to up their game.
Then he was offered a Job at Spanish club, Valencia, in a classic case of neoptism, which is rife in European football.
He failed pretty hard and was fired after four months, suggesting he would never manage again, see link below for more details:
Anyway, the point is, even world class skill levels don’t map across disciplines.
A great insightful can be writer is a much better analyst than a top class gamer because they have the skills to get their point across.