He sanctioned state kidnapping of children from their homes, against parental will, to put them in institutions that damaged them terribly.

Hold him to 2017 values? How about the Christian values predominant in his own day?

Exodus 21:16
"He who kidnaps a man, whether he sells him or he is found in his possession, shall surely be put to death.

or

Deuteronomy 24:7
"If a man is caught kidnapping any of his countrymen of the sons of Israel, and he deals with him violently or sells him, then that thief shall die; so you shall purge the evil from among you.

etc...

Stealing children from their homes was never okay, in biblical times, in 1867 or in 2017.
We can celebrate Sir John A. in other ways, for actual good things he did. His name shouldn't be on schools. His history in the creation of the evil residential school system makes this an obvious point, whatever your particular 'values' are.