Also fiat networks can be censored by financial institutions and government, as we saw with the financial blockade on WikiLeaks a few years ago, and have seen happen against pro-democracy protestors in Hong Kong recently. Direct merchant acceptance of crypto provides an alternative when such financial controls are put in place.
Merchant adoption of crypto is an unmitigated good for crypto, from any perspective you look at it from. It's puzzling to me when some crypto enthusiasts see no point in it, when it is really the entire point of cryptocurrency.