Again, you're repeating false rumors that were started by wingers as a way to try and discredit Biden.
He set up an ad-hoc "studio" in his own place at a time when people were social distancing as much as possible. Should he have rented a room somewhere for it to be more "legitimate"?
Trump ceased doing any in-person appearances/campaigning for the same time period Biden was working from his own home.
I know people liek to believe stuff they hear without having to do any due diligence or critical thinking ('cuz, you know..>WORK), but the whole nonsense about Trump being a better rally draw has been disproved many times. Just one example:
https://www.reuters.com/article/uk-...t-campaign-strategy-not-support-idUSKBN27F27Y
"They" didn't want him going out in person because he was doing something that was in the interest of the public at the time: avoiding events that would foster the spread of COVID. Much unlike Trump, who selfishly insisted on getting his own family and staff sick with the virus that he likely got at one of HIS own events.