Not if it's the best pitch he's likely to see. As long as he's swinging at balls in the strike zone, I don't know why it matters what the count is when he swings. For a guy like Gattis, taking a first pitch strike (especially if it's a fastball) can put him in a hole that gives the pitcher a huge advantage. I don't know the statistical analysis of Gattis' performance at different counts, but I'd be curious to see it.
By Count AB R H 2B 3B HR RBI BB HBP SO SB CS AVG OBP SLG OPS
Count 0-0 50 0 11 2 0 2 9 0 0 0 0 0 .220 .216 .380 .596
Count 0-1 22 0 8 4 0 1 4 0 2 0 0 0 .364 .417 .682 1.099
Count 0-2 29 0 5 1 0 1 1 0 0 16 0 0 .172 .172 .310 .482
Count 1-0 25 0 4 0 0 2 5 0 0 0 0 0 .160 .154 .400 .554
Count 1-1 24 0 13 0 0 4 10 0 0 0 0 0 .542 .542 1.042 1.584
Count 1-2 51 0 7 2 0 1 3 0 0 25 0 0 .137 .137 .235 .372
Count 2-0 9 0 5 2 0 1 3 0 1 0 0 0 .556 .600 1.111 1.711
Count 2-1 12 0 8 3 0 2 4 0 1 0 0 0 .667 .692 1.417 2.109
Count 2-2 30 0 3 1 0 2 3 0 0 17 0 0 .100 .100 .333 .433
Count 3-0 1 0 1 0 0 1 4 8 0 0 0 0 1.000 1.000 4.000 5.000
Count 3-1 8 0 2 0 0 1 4 5 0 0 0 0 .250 .500 .625 1.125
Count 3-2 12 0 0 0 0 0 0 7 0 7 0 0 .000 .368 .000 .368
After 0-1 136 0 36 9 0 10 20 5 3 44 0 0 .265 .306 .551 .857
After 0-2 56 0 9 2 0 2 4 2 0 31 0 0 .161 .190 .304 .494
After 1-0 87 0 20 4 0 6 21 15 1 21 0 0 .230 .343 .483 .826
After 1-1 99 0 26 3 0 9 19 5 1 30 0 0 .263 .305 .566 .871
After 1-2 75 0 8 2 0 2 4 4 0 38 0 0 .107 .152 .213 .365
After 2-0 21 0 9 4 0 2 9 13 1 4 0 0 .429 .639 .905 1.544
After 2-1 34 0 11 4 0 4 8 3 1 10 0 0 .324 .395 .794 1.189
After 2-2 37 0 3 1 0 2 3 5 0 20 0 0 .081 .190 .270 .460
After 3-0 5 0 2 0 0 1 6 13 0 1 0 0 .400 .789 1.000 1.789
After 3-1 13 0 2 0 0 1 4 7 0 4 0 0 .154 .429 .385 .814