Post-COVID saw tourism explode in Japan. Last year saw record numbers of climbers of Mt. Fuji which caused lots of problems. Public restrooms were overwhelmed. Too many people left trash on the mountain. Injuries of unprepared climbers strained the patience and the resources of the local authorities and service industry.
Despite new restrictions put in replace in response to the situation, this year's hiking season started off tragically. This video doesn't mention it, but 5 people died within just the first week or so of the climbing season.
Fuji shouldn't cost you your life. Just be prepared. And be ready to skip it or turn around in case of inclement weather.
I was lucky to be living in fairly close proximity to Fuji during COVID. I had the mountain almost all to myself some days.