In all likelihood, yes. Early voting starts october 13th and ballots must be in by november 3rd when polling places close, but I'll call it midnight to make the math easier.By "is it", I meant "Is this voter suppression by the republican party?", not "is this where I follow up by asking the same question I did when I posted the image?"
To be crystal clear: Is this voter suppression by the republican party?
That's a total of 22 days in which you can drop off ballots. But since there is talk of allowing drop offs as soon as you receive the ballot (I couldn't find out whether this is actually being done, but I'll be generous), we'll go with the 30 days that are the minimum for arrival of mail in ballots.
30 days is 43,200 minutes. Should every registered voter in Harris county (2,357,199 voters by 2018 numbers) decide to use the option that single box would have to serve more than 50 voters per minute, for the entire duration of the 30 days.
Even if it is only 10% of the registered voters that decide to use the box it will become impossible, logistically speaking. And since republicans tend to have more sway in rural areas they will experience nowhere near the same problems.
Is it voter suppression? Not sure, probably.
Is it acting in bad faith and harming the democratic process? Sure is.