I checked the original tweet to try and understand this better and what appears to have happened is that Otter kept recording after he left and the VCs stayed on the call chatting (for hours, according to the tweet). This violates the assumption baked into the recording agent (all participants of the call have a right to a transcript of the whole call) by repurposing a scheduled meeting into a party line/just chatting sort of situation.

You could fix this by training people not to use booked meetings this way but I'm not sure how realistic that is to do. I think it might be that services like Otter need to be adjusted to take into account that not every part of a meeting is of equal sensitivity.

i.e. my HOA's monthly meetings have a private period for the board only and a public period for all residents. If Otter were used in this configuration, it would broadcast the exact details of those private discussions to the whole building, which might include board members discussing details that shouldn't be shared with everyone.