I agree. The Book of Mozilla stated: "Their tags shall blink until the end of days", and they are now violating the scripture.
On the other hand, the tag has been on it's way out since IE started catching on in 1998. So very few will notice their apostasy.
I think there's enough cruft on today's bloated Internet that the blink tag is hardly a significant step in a right direction.
"Trust me with your data, I am a technologist. It's okay, I'll take care of it. Though I will expect you to fire up a VM if you still care about it 10 years from now."
Not expecting it is not the same as not wanting it - and the demise of <blink> is an expression of wants - or rather want nots.
I think something can be said for getting rid of useless stuff in a codebase.
www.iwantmyblinktagback.com
To put it another way, <blink> has meaning by virtue of its history. Its presence on a page says something to the viewer - not something technical but something cultural.
<blink>'s removal does not make the web richer or more meaningful. Instead, its removal does something quite the opposite.
I won't say that it is vandalism - but it does wantonly alter the expression of existing web content, and does so to the very content that is most in danger of being lost to history. It neuters what makes some web pages representative of their time and place.