Another thread of remoaners moaning.
I travel to Europe all the time, almost exclusively via car ferry or tunnel.
Since Brexit I'm asked exactly the same questions I've always been asked. Final destination, duration of stay and purpose of visit. Passport or scanned as it had always been. All that has changed its they take a few extra second to find a page to stamp.
Since I'm alone in the car I often have to pull aside for the cursory check in the boot which takes a minute or less.
Traveling through Europe even in Schengen is not uncommon to show your passport when entering Denmark from Germany, and entering Sweden from Denmark. I'm often pulled in entering Norway, especially in the north at very quiet border crossings, as a right drive car on UK plated stands out, however they usually looking for tobacco and alcohol as limits are very strict for anyone entering Norway. It's why most Norwegian's near the border go shopping in Sweden on a Saturday when the customs guys don't work.
Returning to the UK has always been the same. Where have you been, how long have you been, and what were you doing there and can weook in the boot. At Calais the check inside most vehicles, especially vans, caravans and anyone with a roof box, and were doing so before Brexit. All that's changed is a few seconds for a stamp.
The French have always been a bolshy and workshy people. They were before Brexit and they still are now. Same as UK border force being incompetent and disorganised, like any other UK state agency.
Since my main destinations are NL, D, DK, S and N, I now skip France all together and go via Hook of Holland. A much nicer experience. The attitude difference between the French and Dutch border staff is night and day, even though the questions and processes are identical.