I agree with you. I was also skeptical about this knowing that McDonalds is a massive international food chain. If they are accepting crypto payment (heck even just a few branches) I'm sure it will make noise and we will find a post here in the forum about it. Moreover, you have a good point regarding the legality of cryptocurrencies for a lot of countries, which is a big factor to consider before a big food chain like McDonalds incorporate it as an official means of payment.
As for the picture posted, I think it was taken out of context. There are a lot of possibility on what could have happened there. For example, it could be that it just so happened that the phone was opened to that page and since the kid and whoever he was with was in front of the ordering machine it was misunderstood by the one who took the photo. Nevertheless, unless there is a legit verification as to what the actual facts are regarding the phone, I'd say it is not reliable to assume they are paying using BTC.
Yes, if such a large food chain restaurant starts accepting payments with Bitcoin or other cryptocurrencies we will see thousands of news content about it in many sources. I agree with many things you mentioned but I think it isn't possible for only a few McDonalds branches to accept payment with Bitcoin or other cryptocurrencies because such chain businesses generally use some common payment methods and only exceptionally use a different payment method in the country where they are located. I don't think that such a payment method will be accepted exceptionally in any country at least under today's conditions especially since Bitcoin and other cryptocurrencies aren't yet legally accepted by all countries.
I think that the photo we see here may be fake or as another possibility, another customer may have made these children's order with cash or credit card payment and requested this amount from the children in Bitcoin. Of course in the event of such a scenario it is very likely that such a photo will be taken and disseminated through social media in order to misinform many people.
Indeed. Also, I'm not quite sure the way how McDonald's could accept BTC since it is a fast food chain and the order should be paid fast as well and this is how you can spend a few hours in McDonald's just waiting for your transaction to get confirmation as none of the solutions (such as LN) was mentioned on the screenshots from the first post.
Certainly, the execution of Bitcoin transfers varies depending on network density. For this reason, a business whose main purpose is to deliver food quickly can't waste time completing the transfer process by accepting payment in Bitcoin. In addition, if a possible network blockage or similar situation occurs considering that the payment will reach the business after a few hours, I think this will also cause order deliveries to not be made.
When we think logically, we can also determine that the content here is fake. There is only one possible possibility that could have happened, as I just mentioned.