According to Eric Balchunas on Twitter, the process of onboarding a new ETF in many regions can take up to three years, which is important for traders considering long-term exposure to crypto ETFs. Balchunas notes that while this observation is anecdotal, it aligns with industry experience, suggesting that approval and listing timelines can affect trading strategies and portfolio planning (source: Eric Balchunas, Twitter, May 1, 2025).