Charging the battery to 100% regularly can accelerate battery degradeation over time. Charging via a rapid charger at a motorway services from time to time or even letting it charge to 100% if time allows on them odd longer journy’s, isn’t going to cause much in the way of harm.
All EV’s have a safety buffer, The e2008 for example has50kWh battery but only 46.3kkWh is useable. A similar buffer will also be at 0%. The e2008 is also capable at charging upto 100kW. Plugging into a motorway services 150kw, your car will throttle the charge and the likely hood your paying over the odds using a 150kW or higher charger.
Like @Glos Guy we only stop for a quick pee and were back on the road again to our destination. If I’m travelling alone to my parents three and half hours away, I’ll do my dam best not to stop at all.