If you are a techy person, then yes. It is the smart way to go. If techy stuff confounds you or drives you bonkers, then probably no. Specially if you have iffy WIFI.

My smart controller can be programmed manually, it's just much easier on-line. There may be some simple controllers that are mechanical, but I think most are electronic, so the WIFI doesn't take away from function. I'd imagine most will have WIFI, because it's easy to add. I'd look for the best controller for your needs and if that includes WIFI, don't reject it.

I have a Rainbird controller that is more than ten years old and still going strong. I see that they have redesigned them with updated screens and user interface but the basic functions still seem to be the same. You can program it manually or by a wifi module bought separately. They have multiple sizes with different numbers of possible zones.

These are more expensive but the extra money buys a few advantages. First is reliability, Rainbird is an established brand with a great history for making quality products. Second they can be used indoors or outdoors. Many cheaper controllers are not rated for outdoor use and have to be placed in a garage or other shelter. Third, every controller is capable for use with long run times needed for drip systems. Many cheaper controllers have limited station runtimes that aren’t suited for drip systems. Fourth there are many options for scheduling so you can customize according to your needs. Cheaper controllers often have fewer customizing options.

Hope that helps.

I agree with Kentc, rain bird is the best way to go in my exp. Hunter also has some models that might fit your needs but rain birds modular design allows for simple modification to the system.