This is one of the few stories where the MC hiding their power doesn't bother me. Mainly because he's not hiding it for any real reason (except maybe making sure he can't receive forced quests), but he honestly doesn't really give a fuck. He stated his goal - live freely on his own terms His skills - Fighting sword/magic Available jobs - bandit/adventurer/military Military doesn't meet his first qualification and he's a decent person so doesn't want to be a bandit (which can be quite limiting in its own right unless he wants to murderhobo). Which leaves adventurer where he can take the jobs he pleases, travel as he pleases and if he needs extra money it doesn't block him from turning in materials etc. above his rank (which would be stupid). I find it quite refreshing.
Yes you will have the repeating "you're only rank F?!?!?" convos but he honestly doesn't give a damn, not about rank or hiding his power. (While he is it is also more like he just doesn't flaunt it but doesn't mind if people find out either)
And for the people complaining about the dwarf, honestly I can understand both sides, however he did state his workmanship was quality which it was. However if all the equipment can only be made out of poor materials and it is a condition that is citywide, he probably won't bother pointing it out because what's the use? If anything they will leave until they find a merchant that will lie about it and get the money. Although I have been reading alot of chinese novels recently and while it is probably worst when the MC is the salesperson, all the salespeople are pretty much scumbags of a much grander scale than this guy. She was right to be angry but there is also no real reason for him to give a full refund, especially when by the time the product comes back it is completely trashed. I find deception a fair sales tactic, but lying is not. (basically giving accurate info but only of what the customer thinks to ask for or letting the customer infer something more, obviously this is much less acceptable in today's common sales environments but in a fleamarket environment or even private sales it is different, and I consider handcrafted goods to fall under these categories)