I have never seen the point, you draw through a stem, you draw through a filter, why do filters and ruin the flavour of the tobacco ? no point, if they made filters law I would give up.
I was born in 1955, my brother pinched 2 pipes from Woolworths in 65 and we shoved dogends in them, then we collected cigar dogends from the outsides of clubs, didn't try pipe tobacco until 68ish, then never stopped.