ok, that just looks insane.
a) why would someone order fiber with speeds slower than dsl? you can get up 100/100 with vdsl, so this is stupid
b) they say phone socket, so it is not actual fiber after all. just another form of dsl. so why bother?
c) pppoe is the worst type of connection you can have, speaking from experience. you can have your own modem hook up to pppoe connection in a bridge modem but it needs to reauth every now and then for whatever reason and you will be waiting for connection in the middle of the day for few minutes every time.

what comes to the draytek, yes, it is just fine as a router/modem/wireless ap/firewall as any other 30 dollar device.
if you think that is all the security you need, go ahead.
lot of companies do. but don't get fooled by thinking it can in anyway compare to a real firewall, or real AP or real router or real anything.
it is a compromise from the start up.
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