People in temporary housing will usually be provided with a kettle and microwave in the kitchen which is shared, They are unlikely to be provided with personal crockery and cutlery.
Yes, a tinopener is cheap. Most people will be able to get one but you’d be surprised how many are without. It is a standard item for many food banks to ask for.
Some charities do home packs which include a couple of towels, some sheets, a couple of plates and cutlery - basic things. People using foodbanks include refugees and those who for a number of reasons have had to move speedily and taking little with them.
Of course things which need tinooeners are useful to food banks. It’s just worth being aware that some food items won’t be accessible to all. It’s why some things like pot noodles or microwave rice pouches can be useful - all you need is a spoon or fork.
Food poverty means many people can’t afford to heat their oven. They will cook purely on rings and use as little fuel as possible as they will need to feed the meter more. Lots of people do t ever or rarely have a hot meal but live on sandwiches etc. it’s why there’s such a campaign for school dinners as for lots of kids it’s the only hot meal they get. And don’t forget the people who’ve grown up never learning basics such as cooking anything beyind frozen food or even that, Again, far more people live in ways many can’t really imagine. ‘Only £1 for a can opener’ is a £ that many do t have.