Hang on a minute, some people's dysbiosis is so bad they can't tolerate carbs like rice and quinoa. Some people's dysbiosis is severe and they have to get their carbs from different sources, if anyone has severe gut dysbiosis then the carb sources they eat will have to be found elsewhere, there are other sources of carbs but you have to find what you can cope with and tolerate.
I know everyone spouts about FMT and it's wonderful if you're lucky enough for it to have worked but like everything else it comes with risks when you do a d.i.y. Job and it can be dangerous too, you have to way up the pro's and con's.
In the U K if your child develops dysbiosis it can be a nightmare with doctors who think it treatable with a good dietician and may say things such as we don't know that or that's what you say. The thing is there are nurses trained in sibo and gut dysbiosis but they can be hard to find. There are specially trained dietitians in gut dysbiosis who work with you and not the other way round. There are specialists and professors who deal with gut dysbiosis within the NHS and private sector but you have to find them and a lot of ordinary GP's don't know where to find them because they can't be bothered to read the literature that is sent to them every month of the latest updates.