Yes - hence asking @FatsharkStrawHat for clarification since this nuance wasn’t explicitly clarified in the OP.
This also means that for weapons with a high number of new blessings being added to their pool, even if you completely maxed all blessings today under the new system you’d only be 50% towards mastery.
Also consider this… each blessing might be “capped” in terms of how much mastery you can get from it (as I suspect), but then you need to invest at least 15 mastery points to unlick Tier 4 blessings (5 at tier 1, 5 at tier 2, five at tier 3 to get to tier 4). So you’ll need 16 mastery to just be able to unlock 1 tier 4 blessings.
Now consider this… we don’t know what the mastery bar looks like. Are these mastery points earned at an even rate or are they curved towards the end? Getting 4 subdivisions of mastery may not even equal 16 points in terms of earned mastery on the progress bar.
I’m glad we’re moving towards a more deterministic system, but I’m preparing myself for a let down in terms of how much mastery progress I’ll really have post update.