I don't spray chemicals to control aphids in my greenhouse or garden. That doesn't mean I'm "tolerating" the pest... but I think my best approach is to fill the garden with plants to support beneficial insects. Once the natural enemies of the aphids build their population for the season, the aphids don't cause me serious problems for the rest of the year.

Some additional plants to encourage beneficials: Yarrow, Maximilian Sunflower, Alyssum, Milkweed, Speedwell (Veronica), Dill, Bee balm, Lobelia, Marigolds... I mean, really, just a huge variety of plants, particularly those from the mustard, carrot, daisy and mint families. And, as emphasized in the video (more than once, I think), go for diversity of bloom times and flower types.

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Photo credits:

Aphid Giving Birth, photo by MedievalRich used without changes under the Creative Commons Attribution-Share Alike 3.0 Unported license

Aphid Infestation on rose, photo by Lincoln Peh used without changes under the Creative Commons Attribution 2.0 Generic license

Winged aphid, photo by Joaquim Alves Gaspar used without changes under the Creative Commons Attribution-Share Alike 3.0 Unported license

Aphid honeydew, photo by Amada44 used without changes under the Creative Commons Attribution 4.0 International license

Aphids on Kohlrabi leaf, photo by Downtowngal used without changes under the Creative Commons Attribution-Share Alike 3.0 Unported license