BotD: Instant cast with a 20s duration upon activation that you could extend to 30s max. 30s CD
RoE: Refresh GL on taking damage. 60s CD
Anataman: Freezes and Refreshes GL. Can't move during the channel. 60s CD
SSS: Refresh GL upon hitting target. GCD skill
Perfect Balance: Ignore Forms entirely to build up GL. 2 minute CD (60s CD in SB)
Not a single one of those skills is comparable to BotD on any level at all. You even claim that you would still lose GL even if RoE would apply on being hit vs taking damage while DRG can potentially have almost double the duration of GL with BotD and can still refresh it before it runs out due to the CD on it being half the duration of any of MNK's maintenance tools so on both a practical and technical level, BotD is far and away the better tool for maintenance in comparison any of those on MNK.
Whether or not Anataman is better or worse than RoW is irrelevant. They both are used to accomplish the same thing, which is build up GL quicker and while Anataman is reliant on server ticks, RoW required 2 shoulder tackles to build up GL. RoW was awful for transitions when there's nothing to hit but Anataman works great there. They're different in their method but functionality was the same hence why I used "replaced" since you can do just that.
RoF had a slow down that made double weaving oGCD necessary. That is no longer the case and thus the extra oGCD aren't necessary anymore and while I'll miss Howling Fist and Steel Peak, I can live with their removal so long as we aren't handicapped for it, which has been rectified now.
I'm not defending current design, I'm arguing that GL sucks as a core job mechanic as it added nothing to MNK but at least the QoL improvements made it less of a chore to manage. The class will never be as entertaining as it once was during HW, when I personally found it to be the most fun, but anything to make the class flow better is a plus from me and if SE is done with throwing MNK nothing but GL management skills than maybe the class can actually see some actual progress to its rotation.