I believe the reason being livestock people will want to see and select taking a lot more time at the LFS/shop while hardware is you take and go and like you mentioned.
We don't buy hardware regularly. Some people I know like to visit LFS/shop at least 2 to 3 times coz nothing to do. That's before this Covid situation.
Technically, we are not suppose to go to reefer's house and we should be using courier if you follow strictly and this should be the option.
Coz remember this is non essential meetup and the person might be fine for such act.
LFS/shop are basically opened to sell the fish food/medication which we needed with a safe distancing measure.