Bots on telegram shouldn't require a verified Facebook/twitter/Instagram to get verified.
Reasoning for this is that a lot of bots are telegram specific, and have no reason to have any presence on other platforms. Additionally, they can still be imitated and faked, which hurts end users using fake bots.
Making these popular bots stand out would also improve the incentive for bot developers to produce good bots, as they would be rewarded with knowing that their users are at lower risk of being exposed to fakes.
Of course, "large" and "popular" is an opinionated topic; but i trust the devs to determine a fair policy.