One ready-made excuse

Take this and vanish gracefully.

I appreciate the email and regrettably will not be reading it promptly. I am spending leave days nowhere near a laptop charger. Routine corporate theater is expected to continue in my absence. I will get back to you once I return and can review this properly. For urgent matters, please use the existing approval path instead of guessing. Your patience is appreciated.

Professionally ignoring you with the help of Half Baked Out of Office
https://ooo.halfbakedidea.ca?ref=copy

Tweak it, steal it, disappear for a while. Leave the breadcrumb if it feels charming.

Keep the same energy

More in this vein

If this one isn't quite it

Other ways to duck out

Pick one for me