I do not want to give anyone false hope but I have been on the live chat with Apple regarding this (*again*😭) I have quoted key bits from the conversation below regarding the M1 speakers:
"In this case, I will note the reported issue and explore having it looked at further."
"You're welcome and absolutely. Apple's discussion forum is designed to gather customer feedback so that software related issue can be addressed by upcoming updates. In this case, it won't be necessary for me to collect your information but I greatly appreciate your willingness!"
"So, I cannot be certain as to when the issue will be addressed but I'm confident that it will be fixed as it is our mission to correct these sorts of occurrences."
From this, hopefully in the next Big Sur update, we will have a solution!