What does it mean to "prep food on the go" in terms of air travel?

We are planning a trip on an airplane from Canada. We wanted to know if we could bring fruit aboard, and went to a government of Canada website that explained that we could. However, on the same website there is also this line, that seems to me completely counter to what I think people do on planes:
If you plan to prep your food on the go, keep in mind that small kitchen appliances with blades 6 cm or less (e.g. personal/hand-held blenders, coffee grinders, cheese slicers) are permitted in carry-on baggage.
Website is here: GC guidelines
What does it possibly mean? Why wouldn't the blades of such things be not allowed on a plane, and would someone really bring, say, a blender or a cheese slicer and prepare food on a plane?
Best Answer
Cutting up fresh fruit might be desirable if you're travelling with a small child (you should even cut grapes in half) and small knives are also permitted.
But I don't think that's what they're getting at. If you're travelling without hold luggage, "on the go" means for your entire trip, not just while on the flight/in transit. And you may well want to have the ability to make a simple meal in a hotel room rather than eat out.
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Can you bring food on the plane?
Bread. Solid food items (not liquids or gels) can be transported in either your carry-on or checked bags. Liquid or gel food items larger than 3.4 oz are not allowed in carry-on bags and should be placed in your checked bags if possible.Can I take food in hand luggage?
You can carry food both in hand luggage and checked baggage. Keep in mind that food products should be contained in commercially branded packaging with the original seals unbroken. Some airlines may refuse the carriage of fresh products with short shelf-life, especially on a long-haul flight.Can you bring food on a plane Canada?
You can carry solid food items, such as sandwiches, apples and granola bars, in both your carry-on and checked baggage when you are travelling within Canada.At the Airport
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