We've been in a bull market last three years or so
You need to look at at least until 2000 to draw concusions about whether an indicator can go lower or not. I remember RSI being clued to slow values for a long time. I think in a bear market, before you can trust RSI long signal, you need to see it to move out of oversold area, not just slow down in getting furheer down or move a little bit up.
All that time frame is in a bull Market. Bull market rules can not be applied on bear market. JMHOP. Still short some calls, Major is in and near flat line.