There is no such thing as support and resistance from a moving average, with the exception of one aspect (below) .
A moving average is only what it says it is - an average of a certain number of values which moves every time a new value is added. Kind of like a window covering a range of values that moves along with the latest new value. There are many variations on how an MA can be calculated but they all do serve the same purpose: to show where current price is relative to the recent average of prices.
The only situation where MA’s can be seen to function as a form of support or resistance is when they are calculated for periods so widely followed by a broad range of market participants that they become self-fulfilling in technical analysis to a greater or lesser extent.
If you use an MA based on, say, 13 periods or 27 or 41, etc it would be very unlikely that the price would ever actually bounce off these levels at all except maybe as a random event or because the value happens to coincide with some other TA-deduced level.
But when the MA value is one that is widely followed by active market participants, such as 20,50,100,200 periods, then it tends to act as a magnet for people looking to set open/close trades somewhere in that region and concentrates their orders close to the MA value.
For example, if you are looking to buy as the price drops towards a 200MA line then you place your order just above the line in order to optimise your buy entry price. Similarly if you are already short and looking to close out near to that 200MA then you would place your close-buy just above the line in order to maximise your profit, but not beyond the line in case you miss out.
The MAs that are followed in this particular thread are ones widely used in many instruments and therefore represent a good region for entering trades (or exiting). But it is the SW analysis that is driving the direction for these pairs, not the MA’s. These MA’s only identify possible price levels for optimising performance within the structure of SW trading.