Buyers right now, especially first timers, are not typically sitting on a lot of cash. Many of the buyers I've been working with can barely scrape together their down-payment, but are still eager to take advantage of this unprecedented buyer's market. That said, a seller should always be open to the idea of paying the buyer's closing costs in order to get the deal done.
Say you have a home listed at $200,000. You have a buyer come along and offer $195,000 with $5000 towards closing. You net $190,000. You could hold firm on the closing costs issue, let your buyer walk away, and wait a few months for another one to appear. At that point, you've probably dropped your price and you're probably going to get a lower offer. Say you've dropped to $190,000 and now you get a buyer who doesn't need closing costs, but offers $185,000.
Which would you rather have? $190k in August or $185k in November?