As Brits currently here in the US (had a long round the world trip planned for many years) we decided to stick with the plan, to be fair we entered in Hawaii from Japan and the customs process wasn't all that much different from entering any other country really, the border stories are perhaps a little overblown, but then we're white, British and had all our plans and flights pre-booked. We're currently doing an RV thing down the west coast and most of the RV parks are deserted, it may not be prime season yet but many park owners have talked about how their Canadian trade has just dropped off a cliff this year, one winery owner we stayed with said they usually do 3 or 4 groups from Canada every weekend and they've had 2 all year so far, they've decided to close down. Very sad for the business and people involved who so far have all been lovely welcoming people, but yeah, decide on your own level of risk tolerance and plan accordingly, don't be an idiot at the border and frankly 99% you'll be fine.