Everybody finds different local maximums. I autopay credit cards in full every statement, while most charges that hit my checking account are overdrafts - it autopulls from the companion savings account with a better rate. Credit cards coalescing many small charges into one allows me to easily stay within 6 transactions per month (Reg D). Although I look forward to returning to using cash wherever possible after the pandemic has cleared up a bit more.
Yep. I'm the same way. The only thing to be careful about (in the US) is that banks can force convert a savings account to a checking account if you make more than 6 withdrawals a month. It hasn't ever happened to me, but they warn me regularly about it.