Ah, well I sure have - as recently as January this year. And I take some pains to avoid that (completely frozen bottle / canteen). I can solve a frozen water bottle problem, but it's a lot less effort with a metal single wall container and an open fire or wood burning stove (OK - Yukon stove running MoGas worked fine, too <grin>).

It's not a non-existent problem for some of us - just something to deal with when it happens. YMMV!

Tom