Although this isn't as annoying as it was before, it still does become irritating. Before, when the game took too long to load, you would have to close the app, and it would prompt you to log in again every time you closed it. This became an annoyance because the game crashed frequently. Now with the recent update, you no longer have to keep logging in every time after closing the app. Yay!
It still annoying though, because sometimes the app would only work again after turning off the phone a few times. I have lost many chances to catch Pokemon because it just took too long to get the app to start.
But if you're having issues with game crashes or infinite loading screens, we have a guide on common Pokemon Go bugs to help you out.