Making assumptions based on ambiguous statements is dangerous. He does not use the words "mass deportation" he does not even say explicitly that he disagrees with Trump. Instead of agreeing he nuances his position first, noting the percentages (which I agree sound a bit far from reality) that cause him to not flat out agree.

The furthest you can take his words is that he is of the opinion that the government should do something about there being a disproportionate amount of non-American born in SV power. There are lots of ways he might think that might be corrected, some of which are not even unfair or racist. To assume the very worst is not constructive.