I may have revealed my ignorance on these systems, in that it was my take the solar cells do degrade. You may be talking about something a bit different here.
I appreciate you addressing the issues though. I do have an understanding that the set-up could be dangerous if you don’t know what you are doing.
Solar cells do degrade, but most well made photo-voltaic solar modules should last about 25 years with very little loss in ability to produce power (only a few watts). Some fail within that time frame but not very many.
The appliances in that list will work with solar power, but they require much wattage and rather large systems to run them.