Counter point to most of the posts here.
I have a 2018 in the US. I have a 70mile round trip commute to work. I usually charge at work since it's free. I always charge to 100% and usually 5 times a week. Occasionally, there's no charger free at work and I limp home with single digit battery percentage left. In this case, I've driven about 105mi at about 50-75mph constant speed. I have a level 2 charger at home that I'll use to charge to 100%. I've done this for 3 years non-stop and 100% charged range in the summer still shows 130-134miles, winter shows 126-130miles. No drop off what so ever.
Not saying you should charge to 100%, just saying after 3 years of constantly doing so, I'm not seeing range degradation. I've also leased the car and don't intend to keep it, so if you bought it, not charging to 100% for piece of mind seems like a good bet.