Meh, big deal. Like the Obama campaigns were't good at "weaponizing" all web tools they could find.
Note how the examples proposed are all GOTV efforts targeted to the R base rather than anything appealing larger slices of the electorate. Despite all this black magic, R turnout wasn't that impressive and Trump lost the popular vote. Where it might have helped a little bit is in exploiting weaknesses that Dems shouldn't have had in the first place, i.e. Clinton's baggage, to reduce D turnout in key states, but again, that's more the Democrats' fault for fielding such a candidate knowing very well that she had such baggage.
Note how the examples proposed are all GOTV efforts targeted to the R base rather than anything appealing larger slices of the electorate. Despite all this black magic, R turnout wasn't that impressive and Trump lost the popular vote. Where it might have helped a little bit is in exploiting weaknesses that Dems shouldn't have had in the first place, i.e. Clinton's baggage, to reduce D turnout in key states, but again, that's more the Democrats' fault for fielding such a candidate knowing very well that she had such baggage.