However, for the majority of people running via clear net is probably okay. As long as your ISP can be trusted, which there's an argument that no third party or ISP can be trusted. It highly depends on your threat model, and who you trust. If you trust your ISP, then there's no real concerns. If you don't trust your security or your ISP security, then if any of those were compromised an attack could potentially find out you run the Bitcoin node, and therefore highly likely to use Bitcoin yourself, which could mean you become a target, theoretically.
Your ISP would know you're running Tor, but there's nothing wrong with running Tor, and it doesn't tell the ISP what Tor is being used for. If your ISP thinks it's an issue you're running Tor, change ISP. However, if all depends on who you don't want to know you run a Bitcoin node or own Bitcoin. If it's the government, they will know it's generally considered even the most private persons on the internet can't avoid the government, plus if you live in a country which requires taxation you should be declaring your taxes on Bitcoin to them. If it's your ISP; fair enough, but just use Tor.