And there is nothing wrong with this practice. SENA countries does the same thing with pace, swing, bounce. If they can exploit the weakness of sub-continent team then every sub continent team should also exploit their weakness. Test cricket is not only about raw pace but spin also.
If i am a pitch curator then i wouldn't hesitate to create a pitch where likes of Anderson-Rabada-Cummins getting smashed by 19 year old kids when playing in the sub-continent.
Although every country do this and make pitches which help them but isn't against the sports man spirit ?
If a team is good, they should win on any pitch and should not take these short cuts which make results in their favor.