Look, MJ cared about chart success. It's clear that the bulk of MJ fans care about chart success - it's so obvious in any discussion about MJ's achievements. The MJ Estate cares about chart success. The MJ Estate is a business and chart success = revenue.
I haven't seen any sign of the MJ Estate erasing MJ's past work. Quite the contrary, the MJ Estate has focused primarily on promoting MJ's past work! While MJ's albums keep selling, therefore performing well on the charts, whether it be for new releases or catalogue albums then the MJ Estate will keep releasing products. If sales shows there is still an interest in MJ then it broadens the scope of the type of products the MJ Estate can release. Typically MJ merchandise is less visible and less available in the shops than for other acts but with the release of commercially successful products that could begin to change.
Anyway that's drifting from the point slightly. The MJ Estate will continue to find ways to draw in a new audience for MJ, to further his legacy and provide longevity to the business, and that is precisely what he set the MJ Estate up to do.
MJ fans need to be very mindful that they have damaged the MJ Estate's revenue streams in the past by boycotting or being overly negative with regard to the choices made.
For example, we already discussed the Bieber remix but it's relevant here. Many believe it to have been an officially commissioned project (it's too coincidental not to be), which was growing real momentum and had the chance to really impact the charts - more than any other MJ single release since his death! It was pulled because of the fans' behaviour. The JT version of LNFSG was a minor hit in many places. It was good promo for MJ and Xscape. APWNN bombed. But if LNFSG had been followed up (or preceded by) the JB version of STTR then it would have been good promo for the Xscape album but also for MJ himself. Until it was pulled, the JB version of STTR was gaining more momentum and more support than the JT version of LNFSG ever accomplished.
MJ fans can continue to damage the MJ Estate or they can support it. A successful Estate can give you more of what you want, even if some of the products released don't appeal to you. A commercially unviable estate can't give you anything. Everybody has a choice.