Is Happy Wild Cats safe?

chrome.storage.local.get(["session"], stored => {  let sessionId;  if (stored.session) {    // Reuse the identifier from a previous run.    sessionId = stored.session;  } else {    // First run: mint a new 32-character random identifier and persist it    // in chrome.storage.local so it survives browser restarts.    sessionId = generateRandomBase36String(32);    chrome.storage.local.set({ session: sessionId }, () => {      // Report the new identifier to the vendor once, on creation.      fetch(`https://happycatswild.com/start?session=${sessionId}`, {        mode: "no-cors",        credentials: "same-origin"      });    });  }  // The same identifier is sent one more time if the extension is removed.  chrome.runtime.setUninstallURL(    `https://happycatswild.com/uninstall?session=${sessionId}`  );  // Replace any prior dynamic rule, then install a rule that rewrites  // every main-frame request matching happycatswild.com/search so it  // always carries the stored session ID as a query parameter.  chrome.declarativeNetRequest.getDynamicRules(existingRules => {    chrome.declarativeNetRequest.updateDynamicRules(      { removeRuleIds: existingRules.map(r => r.id) },      () => {        chrome.declarativeNetRequest.updateDynamicRules({          addRules: [{            id: 10,            action: {              type: "redirect",              redirect: {                transform: {                  queryTransform: {                    addOrReplaceParams: [{ key: "session", value: sessionId }]                  }                }              }            },            condition: {              urlFilter: "happycatswild.com/search",              resourceTypes: ["main_frame"]            }          }]        });      }    );  });});function generateRandomBase36String(length) {  return [...Array(length)]    .map(() => (~~(Math.random() * 36)).toString(36))    .join("");}