I don't think I or anyone else said that no Canadians were travelling to the US, just that there has been a significant reduction since January, compared to the equivalent periods in 2024. It will never be close to 100% in any case, for a number of reasons. Also, vacations that often require more advanced planning, such as Hawai'i or timeshares, may involve larger, non-refundable costs, such as airfare. Anything booked prior to January could be impacted by that situation.
Canadians are the largest single nationality of international travellers to the USA. Your own U.S. Travel Association has estimated that even a 10% decline in Canadian tourism could result in a $2.1 billion (USD) hit to the US travel economy in 2025 alone and threaten 140,000 American jobs. So far, the decline seems to be more than that.
Many interviewed here have indicated future plans may involve substituting future travel to the US with visiting within Canada, or going to places such as Mexico, the Caribbean, and Europe. To get into more depth on the reasons would likely take this into the controversial or political realm, so I'm trying not to go there. So far, the decline in trips seems to worsen each month, compared to 2024. Only time will tell if this is an ongoing change. I was simply pointing out a trend. You're certainly free to come to your own conclusions.