What you mean teams won't kick to the corner next year in France and try and maul it over for tries? And then don't want an added option of 6 as a lineout option?
The big factor is Binny has never really been a lineout option for England. Hence why a decent line-out option at 6 is required.
v SA in 2019 where come lineout time George only had Lawes and Maro to throw to who were well marked out by the twin towers Etzebeth/ Lood and then had PSTD and Vermeulen. Same v Lions 2021.
I think my view will forever be clouded by watching the RWC 2015 final when I saw at first hand how having different line out options gives an edge, hence why I always like as many options as possible. That one Wallabies had only 3 because they favoured the Pooper v AB's 4 and AB's killed them come line out time.