No we all quite well understand what you are saying and trying to do and you ignore or turn around the sense of responses to suit your own limited viewpoint.

You are trying to game the system, staying in the same locality 3nights in a row with 2 BRG's a night a part and with a further local nights nights stay on either points or cash.
If everyone books 1night only BRG's, which is not the programs underying intent, IHG will have to either change t+c's or reduce benefit to say 50%, or easier 1x brg night per 30days.

IHG offer you BRG night and discount match on a multiple night booking which is the intention of the BRG scheme, not 2 of 3 free nights or 3 of 5 free nights

The rule you are complaining about and wanting to circumvent is to prevent someone finding a BRG booking opportunity and booking Mon/WED/FRI alternate nights straight off on finding a BRG hotel, and for you book 3nights in 1xhotel with BRG night + discounted nights 2&3.
That also makes hotel losing on your BRG. happier as you buy a room from them.

Intent of BRG scheme is that you stay at hotel wth 1x free brg night,and get a price match on rest of nights 2/3/4 etc. Don't be greedy, stop complaining, no other hotel scheme is this generous.