i dont get how ppl think ryuma is stronger than the PK himself. ryuma just live in wano at the time without marines exist let alone warlord, admirals or yonko in other world no three great power whatsoever. while roger whitebeard travelling all over the word competing with tops dogs like other fellow yonko or admirals and not just mere dragon. how could a man called strongest if he doesnt even meet other to strongest to test his power?even whitebeard called strongest and get equal by roger or kaido called strongest and suffers tons defeat.
just like oden who simply strongest person in whole wano, even him astonished by wb and roger and think how vast the world can be and the world apparently way vast even beyond his imagination, even oden atm who legit the strongest samurai in wano need to "toughned and trained" himself on his journey across grand line. that's why he said he admitted he is way stronger than he used to be after his journey.
government doesnt touch wano not because single person but because they are afraid of the forces of samurai there. sengoku say that, even kaido admitted if oden join forces with other samurai (hyogoro and other lords) it will be hell for his side.
so goverment is afraid to solely ryuma is make up story BS. long ago not even marine exist. from the ancient time to nowdays, outsiders afraid of natives samurai forces of wano. not single figures. since we are know samurai is not a individualist but come in packs. and in ryuuma case, he is lucky backtime there are no marines nor admirals. even at oden times he isnt not lucky, just before marine or wg invaded there, kaido come first, thats why marines doesnt bother to invade it again.but even kaido afraids of collective powers of samurai wano.
if you think killing dragon can make him stronger than roger, well akainu, fujitora aokiji or fujitora can kill 100 dragons easily if they wants and none of them considered stronger than roger lol.
dude have they tell you that the ceiling is roger and whitebeard?this is pirate saga....