Why did Trump backtrack?
Actually, the logic is very simple:
1⃣ He promised to raise taxes to "revitalize manufacturing," which has been fulfilled, so it doesn't count as breaking his word;
2⃣ Tax increases have led to stock market turbulence, rising prices, and public discontent, which he can blame on other groups;
3⃣ He doesn't want to bear the reputation of "destroying the economy," especially with even Musk distancing himself, not to mention the internal government divisions. He also compromised on Powell's personnel decisions, stopping losses in a timely manner, and part of his political goals has been achieved.