I've used toe-clips and straps for decades without problems. Even with cleats I've only fallen over once. That was when I first used toe-straps and cleats and forgot to loosen the strap BEFORE stopping. LOL

In the city I ride with the straps loose. Getting out of the toe-clip is easier for me than getting out of a clipless pedal. I had a number of falls with clipless pedals when I stopped with the wrong foot at the 12 o'clock position and leaning the wrong way. I far prefer toe-clips and straps.

One thing to watch out for with toe-straps is shoes with two straps. The toe-strap can get snagged between the two straps when pulling your foot out. I use shoes with one strap at the top and laces or just laces.

Another great thing with toe-clips and straps is that I can wear just about any shoe with them and don't have to put on dedicated bicycling shoes for a short ride.

Cheers