Transmission fluid question

I have a 2013 Lexus GX 460 with 105k miles. Transmission is shifting perfectly. The fluid has never been changed, and Lexus says it's "lifetime."

I know the conventional wisdom is to change it around 60k, but I’m worried about disturbing the system this late.

Should I risk a drain and fill now, or just leave it alone?

Side note: Same question for my 2007 Tundra at 180k miles, never changed either. Bought the Tundra 5 years ago with 150k miles on it. Checked records against both vins and no mention of transmission drain and fill. Otherwise, oil change every 5k miles on my end, brake job, etc and both run well.