The original R4 is also gone, after years of availability at 7 €, and so is the premium alternative (DSTwo)
That leaves 2 reasonable but inferior choices: the TTDS (with YSMenu) and the Acekard (with AKAIO, what Wood is a port of)
The shit flashcards (anything with R4 in the name except those 2 above, pretty much), including r4isdhc.com and r4i-sdhc.com, can also run YSMenu for decent compatibility and no timebomb, but no kernel can fix poor hardware quality
Is it piracy if it was released for free? Not in my opinion, but I also think it's not piracy if buying it isn't owning it, and it's not piracy if you can't buy it from the original creators anymore.