The standard datacarriersize Knots has always used is 42 bytes. They knew that and ignored it. We haven't changed anything in this regard.
Brc20 comes in at 45 bytes, so just increasing it isn't a viable solution. That doesn't mean we're giving up - we do want to mine these - but it's going to take some work if Samourai doesn't fix the issue on their end (ultimately there's no good reason for ANY of this data)