Enough with the phone judging. Mothers are allowed some down time too. If you ever see my on my phone at a park, I'm probably at the park letting the kids play freely because I've spent the whole day doing activities with them and free play without adult interference is important for their development too.
I've been giving funny looks being out on walks with my kids with a phone out and staring at the screen but, guess what? We were in the middle of an activity together and I'm staring at the screen with the kids around me because we are doing an activity that uses GPS and a mapping app. My staring at the screen for a little while is me being actively engaged with them outdoors, just probably getting oriented or deciding which direction we need to head in together.
If I've played with my kids, read them books, baked with them, talked to them, fed them, danced with them and then decide to head to the park and look at my phone while I'm there, assuming the kids are old enough that I can glance away for a moment safely, judge away because I have no problem with that action.
For the record I personally don't like texting anyway so don't tend to do it much, but that's not the point.