BU has taken a reputation hit, on top of exchanges considering it as an altcoin. This will all blow over, miners are just milking the tx fees as long as they can before the inevitable upgrade to SegWit.
As they are the entities deciding on the upgrade, I don't understand your logic. Miners will decide in any case, because they build the block chain users can, if they wish, download with their nodes. Miners have not the slightest bit of interest in adopting segwit. They don't have much interest in adopting BU, except for one thing: a miner that can mine a bigger block than his competitor, can reap in extra fees. However, his competitor has to be willing to build on his bloc, also reaping in a bigger bloc and more fees.... except that if they accept too many of them, they release the pressure on the fee market and their fees will go down.
So, for a miner to switch to BU, he is torn between different strategies
1) accept his neighbour's big bloc, build on it, and reap in more fees (for the moment)
-> advantage: more transactions and hence more fees ;
-> disadvantage: fluidifying bitcoin transactions, releasing pressure on the fee market
-> risk that this bigger double bloc will be orphaned by peer miners
2) reject his neighbour's big bloc, and build on a previous bloc
-> advantage: keeping pressure on the fee market
-> risk that most miners will accept the bigger bloc and his new bloc will be orphaned
-> possibility to keep doing so, and produce an alternative chain, the former bitcoin chain
So, long-term thinking miners are against any relief on the fee market, and want transactions in general to be difficult to get through ; however, they have to comply to the wishes of the majority of miners. It is best to follow the majority. But if the majority is not clear, one can decide to fork to keep the small chain with its lucrative pressured fee market.
If miners are not too stupid, they will only pay enough lip service to BU to make other consensus hopes idle ; but they will limit lip service to BU so that it will not become reality, because for miners, desperate users not getting their transactions through is the most lucrative fee market they can imagine.