Should I stop wiping down my grocery containers with rubbing alcohol?

Because you have bought into the hoaxdemic agenda

No, keep doing it to be safe. You could touch your groceries and then rub your eyes and thus become infected with a disease, especially Coronavirus. 

Why are you doing this in the first place?  If it's because of covid, that's an airborne virus.

I stopped doing that months ago, when it became evident that covid-19 isn't likely to spread on surfaces like that.  

I'm 73 and I understand pathogens pretty well.  Early in the pandemic, we were warned to be careful of fomites [objects that people have touched].  So I too disinfected my sacks, cans, boxes, even doorknobs and traffic light buttons.  But as time went on it became clear people were not getting sick from these items.  Further, scientists suggested that a small exposure to SARS-CoV-2 might provoke some resistance to the the virus.  

But it doesn't do any harm, so you can if you are particularly vulnerable or if you just want to.

I do not use alcohol. I wash mine in the kitchen sink which is just as effective. 

It is a good habit I am going to continue, because it means every container in the house is clean. I also wash every piece of fruit before putting it into the fridge. That way I can pick up anything in there are eat it without worrying about dirt or germs. 

The funny thing is that a year ago the health 'experts' told us not to wear masks but to wear rubber gloves instead. This did not make sense to me. I wrote a series of letters to newspapers and governments telling them they were wrong and we should wear masks because covid is airborne. 

It's not impossible to get Covid from handling grocery containers but it is very unlikely. Route of transmission is almost always breathing in droplets of moisture from an infected person's breath.