Concern about 347 open issues - Is this Safari extension currently stable and actively maintained?

[Yodoma]

My setup:
MacBook Pro 13-inch, 2018, Four Thunderbolt 3 Ports
2.7 GHz Quad-Core Intel Core i7
Intel Iris Plus Graphics 655 1536 MB
16 GB 2133 MHz LPDDR3

macOS Sequoia Version 15.7.4, Safari 26.3