Agreed, house prices are too high relative to rents to make BTL an attractive proposition (at least in my neck of the woods).
The risk/reward profile imo is more skewed towards the risk, with possibility that interest rates will go up and/or house prices will suffer a downturn in a recession than warrants the reward you can expect to earn from your investment even in a rosy-case scenario.
From a UK perspective, property has handily beaten stocks market in the last 20-25 years as an investment vehicle, but I think that trend will reverse to some degree over the next 20-25 years, as the FTSE is now relatively cheap vs housing, and the punitive taxes imposed on property investment now will lead people to park their money elsewhere.
That said, my own situation is that we will probably be buying a bigger house in the next 2-3 years, and keep our current home to turn into a rental. The stamp duty on the new place is going to be horrific, but I really don't want to sell our current place and it will provide a 2nd income stream to offset the mortgage on the new home. I don't consider it a BTL because we never brought it with that in mind, but personal circumstances change, and we have already fully paid off the mortgage, so it is the path we think we would like to go down.