Sadly, this is not correct. I have *never* been to any home in "my" part of Europe (Germany, Switzerland, Austria) which had a bidet, only a rare luxury hotel would have one.
In Thailand, on the other hand, most toilets, private and public, have water hoses next to the seat, and if they don't (gas stations etc), they have a big bucket of water with a scoop swimming in it - a solution they seem to have been using for generations. (If you want to also be dry afterwards though, you better carry your own TP. Or a towel.).
And really, faking a Bidet in modern times is as easy as filling a big empty bottle up with comfortably warm water before you sit down.