Even if I wanted an OpenWrt branded device (no, I really don't want to put that burden[0] on project and developers), mt7621a+mt7603e+mt7612e (in the best case, worse if the stated mt7620a SOC would be true) would not be on my wish list[1], even less looking 6-24 months into the future.
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[0] and it is a burden, even if the financial side of it would be covered, the project's reputation and legal status is still affected by such an endeavour; mt76's support for mt7603e doesn't magically get better, just because you put an OpenWrt sticker on the device.
[1] that would more look like Xiaomi AX3600, Xiaomi AX1800 or Redmi AX1800 (so ipq807x based), respectively something based on mt7622+mt7915e+mt7915e.