No, not all gay men are effeminate and not all lesbian women are masculine. Sexual orientation and gender expression are separate aspects of a person's identity.
Sexual orientation refers to an individual's emotional, romantic, and sexual attractions to others. Being gay means a man is primarily attracted to other men, while being lesbian means a woman is primarily attracted to other women. Sexual orientation does not dictate one's gender expression or behavior.
Gender expression, on the other hand, relates to how individuals present themselves to the world through appearance, behavior, and personal style. Gender expression can vary greatly among individuals regardless of their sexual orientation. Some gay men may have more effeminate traits or express themselves in ways that are traditionally associated with femininity, but many others may have a more masculine or androgynous gender expression. Similarly, lesbian women can express themselves across a wide spectrum of gender expressions, including both feminine and masculine presentations, or they may have an androgynous appearance.
It's important to recognize that gender expression is a personal choice and can vary widely among individuals, irrespective of their sexual orientation. Stereotypes and assumptions based on gender expression can be misleading and contribute to misconceptions about the LGBTQ+ community. Embracing the diversity of gender expression within the LGBTQ+ community helps foster a more inclusive and understanding society.