There’s no reason to suggest Martin Smith is lying. He has no reason to want his sighting to be in any way related to GM’s 22:03 alibi. When MS made his first statement he wasn’t thinking he’d seen GM.
The police are well aware that out of all witnesses who come forward to report a sighting, many of them are wrong; mistaken; busybodies; or people who want to feel somewhat important in an investigation.
Their memories are often skewed; and sometimes they “make” features fit to what they think a suspect should be doing.
I personally think that when Mr Smith said his wife called out to the man who was holding the child — who was CLEARLY asleep — and said: “Is she asleep?” very odd. Why would you ask a total stranger that when it was EVIDENT she was asleep?
I find that suspicious..especially if he was almost running
Smith claims the man didn’t reply, but as he was supposedly walking really fast/almost running, the man may not have even realised she asked him a question (if indeed she did). He probably thought she was talking to one of their group of nine.
Or, the man may not have spoken English. They actually said he looked like a local, with a suntanned Mediterranean appearance, and wore clothing like a local rather than a holidaymaker.
There’s also the possibility he was the same man Jane Tanner saw...although he eventually came forward (a long time after Amaral accused her of lying!) and said he was taking his daughter home from night crèche. The Portuguese haven’t said who that man is, except that he exists, he came forward, and his account was checked out.. He could actually be Portuguese and speak no English. Many don’t speak English.
Portuguese, like many Mediterranean people (and I know as I’ve lived on the Med) have a totally different way with childcare than Brits. They allow their children out until late; they’ll often take them to restaurants until late in the evening; and if he was Portuguese it’s perfectly possible he’d finished a shift at work and had collected his daughter from night crèche as his wife was still working in a bar or restaurant. It is a holiday resort, remember.