The issues are SPS inflation and having a handful of guys running a ton of accounts and swapping cards that more or less own nothing and drain the majority of the rewards. SPS staking is the suggested fix to combat the multi-accounting abuse... just shutting down the rewards is what some people have been asking for most of the last year. The problems are very well known and have been complained about for literally months in the Discord. I've hosted multiple AMAs with their team that you can listen to on the SPS DAO youtube channel. At this point it's likely SPS staking or nothing.