Trinket selection ignores board

Trinket selection in Heartstone Battlegrounds is broken, the available picks consistently and totally ignore my board. Last time I was playing Marin the Manager having none other than 4 murlocs already on the 5th and 6th turn yet neither time was I offered any trinket related to murlocs, hell I was even offered Ancestral Automation, like WTF? Same happens when I try to play Quilboars, I have nothing else on my board and I get offered demon trinket and rest is general. Utterly stupid system, have been playing for years but never felt the game to be so unbalanced.

Is it written anywhere that the trinket choices will be tailored to your current warband?

you’ll get 4 Trinkets to choose from, influenced by your Hero, the Minion Types in the game, and your Warband.

I have to admit I too thought it was purely random, but I checked on the announcement

More detailled explanations on how it works :

is a keyword here, not the word warband

this means the trinkets can help your board, doesnt mean you have to like it